Initial snapshot - OpenTelemetry demo 2.1.3 -f

10 files changed, 29636 insertions, 0 deletions

diff --git a/src/currency/build/generated/proto/demo.grpc.pb.cc b/src/currency/build/generated/proto/demo.grpc.pb.cc
new file mode 100644
index 0000000..b02a92a
--- /dev/null
+++ b/src/currency/build/generated/proto/demo.grpc.pb.cc
@@ -0,0 +1,1055 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: demo.proto
+
+#include "demo.pb.h"
+#include "demo.grpc.pb.h"
+
+#include <functional>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/impl/channel_interface.h>
+#include <grpcpp/impl/client_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/support/sync_stream.h>
+namespace oteldemo {
+
+static const char* CartService_method_names[] = {
+  "/oteldemo.CartService/AddItem",
+  "/oteldemo.CartService/GetCart",
+  "/oteldemo.CartService/EmptyCart",
+};
+
+std::unique_ptr< CartService::Stub> CartService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< CartService::Stub> stub(new CartService::Stub(channel, options));
+  return stub;
+}
+
+CartService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_AddItem_(CartService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_GetCart_(CartService_method_names[1], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_EmptyCart_(CartService_method_names[2], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status CartService::Stub::AddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::oteldemo::Empty* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::AddItemRequest, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_AddItem_, context, request, response);
+}
+
+void CartService::Stub::async::AddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest* request, ::oteldemo::Empty* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::AddItemRequest, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_AddItem_, context, request, response, std::move(f));
+}
+
+void CartService::Stub::async::AddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest* request, ::oteldemo::Empty* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_AddItem_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* CartService::Stub::PrepareAsyncAddItemRaw(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::Empty, ::oteldemo::AddItemRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_AddItem_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* CartService::Stub::AsyncAddItemRaw(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncAddItemRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status CartService::Stub::GetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::oteldemo::Cart* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::GetCartRequest, ::oteldemo::Cart, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_GetCart_, context, request, response);
+}
+
+void CartService::Stub::async::GetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest* request, ::oteldemo::Cart* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::GetCartRequest, ::oteldemo::Cart, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetCart_, context, request, response, std::move(f));
+}
+
+void CartService::Stub::async::GetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest* request, ::oteldemo::Cart* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetCart_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Cart>* CartService::Stub::PrepareAsyncGetCartRaw(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::Cart, ::oteldemo::GetCartRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_GetCart_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Cart>* CartService::Stub::AsyncGetCartRaw(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncGetCartRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status CartService::Stub::EmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::oteldemo::Empty* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::EmptyCartRequest, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_EmptyCart_, context, request, response);
+}
+
+void CartService::Stub::async::EmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest* request, ::oteldemo::Empty* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::EmptyCartRequest, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_EmptyCart_, context, request, response, std::move(f));
+}
+
+void CartService::Stub::async::EmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest* request, ::oteldemo::Empty* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_EmptyCart_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* CartService::Stub::PrepareAsyncEmptyCartRaw(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::Empty, ::oteldemo::EmptyCartRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_EmptyCart_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* CartService::Stub::AsyncEmptyCartRaw(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncEmptyCartRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+CartService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      CartService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< CartService::Service, ::oteldemo::AddItemRequest, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](CartService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::AddItemRequest* req,
+             ::oteldemo::Empty* resp) {
+               return service->AddItem(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      CartService_method_names[1],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< CartService::Service, ::oteldemo::GetCartRequest, ::oteldemo::Cart, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](CartService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::GetCartRequest* req,
+             ::oteldemo::Cart* resp) {
+               return service->GetCart(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      CartService_method_names[2],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< CartService::Service, ::oteldemo::EmptyCartRequest, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](CartService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::EmptyCartRequest* req,
+             ::oteldemo::Empty* resp) {
+               return service->EmptyCart(ctx, req, resp);
+             }, this)));
+}
+
+CartService::Service::~Service() {
+}
+
+::grpc::Status CartService::Service::AddItem(::grpc::ServerContext* context, const ::oteldemo::AddItemRequest* request, ::oteldemo::Empty* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status CartService::Service::GetCart(::grpc::ServerContext* context, const ::oteldemo::GetCartRequest* request, ::oteldemo::Cart* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status CartService::Service::EmptyCart(::grpc::ServerContext* context, const ::oteldemo::EmptyCartRequest* request, ::oteldemo::Empty* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+static const char* RecommendationService_method_names[] = {
+  "/oteldemo.RecommendationService/ListRecommendations",
+};
+
+std::unique_ptr< RecommendationService::Stub> RecommendationService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< RecommendationService::Stub> stub(new RecommendationService::Stub(channel, options));
+  return stub;
+}
+
+RecommendationService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_ListRecommendations_(RecommendationService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status RecommendationService::Stub::ListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::oteldemo::ListRecommendationsResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::ListRecommendationsRequest, ::oteldemo::ListRecommendationsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_ListRecommendations_, context, request, response);
+}
+
+void RecommendationService::Stub::async::ListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest* request, ::oteldemo::ListRecommendationsResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::ListRecommendationsRequest, ::oteldemo::ListRecommendationsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ListRecommendations_, context, request, response, std::move(f));
+}
+
+void RecommendationService::Stub::async::ListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest* request, ::oteldemo::ListRecommendationsResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ListRecommendations_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ListRecommendationsResponse>* RecommendationService::Stub::PrepareAsyncListRecommendationsRaw(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::ListRecommendationsResponse, ::oteldemo::ListRecommendationsRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_ListRecommendations_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ListRecommendationsResponse>* RecommendationService::Stub::AsyncListRecommendationsRaw(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncListRecommendationsRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+RecommendationService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      RecommendationService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< RecommendationService::Service, ::oteldemo::ListRecommendationsRequest, ::oteldemo::ListRecommendationsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](RecommendationService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::ListRecommendationsRequest* req,
+             ::oteldemo::ListRecommendationsResponse* resp) {
+               return service->ListRecommendations(ctx, req, resp);
+             }, this)));
+}
+
+RecommendationService::Service::~Service() {
+}
+
+::grpc::Status RecommendationService::Service::ListRecommendations(::grpc::ServerContext* context, const ::oteldemo::ListRecommendationsRequest* request, ::oteldemo::ListRecommendationsResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+static const char* ProductCatalogService_method_names[] = {
+  "/oteldemo.ProductCatalogService/ListProducts",
+  "/oteldemo.ProductCatalogService/GetProduct",
+  "/oteldemo.ProductCatalogService/SearchProducts",
+};
+
+std::unique_ptr< ProductCatalogService::Stub> ProductCatalogService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< ProductCatalogService::Stub> stub(new ProductCatalogService::Stub(channel, options));
+  return stub;
+}
+
+ProductCatalogService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_ListProducts_(ProductCatalogService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_GetProduct_(ProductCatalogService_method_names[1], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_SearchProducts_(ProductCatalogService_method_names[2], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status ProductCatalogService::Stub::ListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::oteldemo::ListProductsResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::Empty, ::oteldemo::ListProductsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_ListProducts_, context, request, response);
+}
+
+void ProductCatalogService::Stub::async::ListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::ListProductsResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::Empty, ::oteldemo::ListProductsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ListProducts_, context, request, response, std::move(f));
+}
+
+void ProductCatalogService::Stub::async::ListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::ListProductsResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ListProducts_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ListProductsResponse>* ProductCatalogService::Stub::PrepareAsyncListProductsRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::ListProductsResponse, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_ListProducts_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ListProductsResponse>* ProductCatalogService::Stub::AsyncListProductsRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncListProductsRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status ProductCatalogService::Stub::GetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::oteldemo::Product* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::GetProductRequest, ::oteldemo::Product, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_GetProduct_, context, request, response);
+}
+
+void ProductCatalogService::Stub::async::GetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest* request, ::oteldemo::Product* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::GetProductRequest, ::oteldemo::Product, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetProduct_, context, request, response, std::move(f));
+}
+
+void ProductCatalogService::Stub::async::GetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest* request, ::oteldemo::Product* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetProduct_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Product>* ProductCatalogService::Stub::PrepareAsyncGetProductRaw(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::Product, ::oteldemo::GetProductRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_GetProduct_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Product>* ProductCatalogService::Stub::AsyncGetProductRaw(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncGetProductRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status ProductCatalogService::Stub::SearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::oteldemo::SearchProductsResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::SearchProductsRequest, ::oteldemo::SearchProductsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_SearchProducts_, context, request, response);
+}
+
+void ProductCatalogService::Stub::async::SearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest* request, ::oteldemo::SearchProductsResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::SearchProductsRequest, ::oteldemo::SearchProductsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_SearchProducts_, context, request, response, std::move(f));
+}
+
+void ProductCatalogService::Stub::async::SearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest* request, ::oteldemo::SearchProductsResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_SearchProducts_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::SearchProductsResponse>* ProductCatalogService::Stub::PrepareAsyncSearchProductsRaw(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::SearchProductsResponse, ::oteldemo::SearchProductsRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_SearchProducts_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::SearchProductsResponse>* ProductCatalogService::Stub::AsyncSearchProductsRaw(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncSearchProductsRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+ProductCatalogService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      ProductCatalogService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< ProductCatalogService::Service, ::oteldemo::Empty, ::oteldemo::ListProductsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](ProductCatalogService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::Empty* req,
+             ::oteldemo::ListProductsResponse* resp) {
+               return service->ListProducts(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      ProductCatalogService_method_names[1],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< ProductCatalogService::Service, ::oteldemo::GetProductRequest, ::oteldemo::Product, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](ProductCatalogService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::GetProductRequest* req,
+             ::oteldemo::Product* resp) {
+               return service->GetProduct(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      ProductCatalogService_method_names[2],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< ProductCatalogService::Service, ::oteldemo::SearchProductsRequest, ::oteldemo::SearchProductsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](ProductCatalogService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::SearchProductsRequest* req,
+             ::oteldemo::SearchProductsResponse* resp) {
+               return service->SearchProducts(ctx, req, resp);
+             }, this)));
+}
+
+ProductCatalogService::Service::~Service() {
+}
+
+::grpc::Status ProductCatalogService::Service::ListProducts(::grpc::ServerContext* context, const ::oteldemo::Empty* request, ::oteldemo::ListProductsResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status ProductCatalogService::Service::GetProduct(::grpc::ServerContext* context, const ::oteldemo::GetProductRequest* request, ::oteldemo::Product* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status ProductCatalogService::Service::SearchProducts(::grpc::ServerContext* context, const ::oteldemo::SearchProductsRequest* request, ::oteldemo::SearchProductsResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+static const char* ShippingService_method_names[] = {
+  "/oteldemo.ShippingService/GetQuote",
+  "/oteldemo.ShippingService/ShipOrder",
+};
+
+std::unique_ptr< ShippingService::Stub> ShippingService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< ShippingService::Stub> stub(new ShippingService::Stub(channel, options));
+  return stub;
+}
+
+ShippingService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_GetQuote_(ShippingService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_ShipOrder_(ShippingService_method_names[1], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status ShippingService::Stub::GetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::oteldemo::GetQuoteResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::GetQuoteRequest, ::oteldemo::GetQuoteResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_GetQuote_, context, request, response);
+}
+
+void ShippingService::Stub::async::GetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest* request, ::oteldemo::GetQuoteResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::GetQuoteRequest, ::oteldemo::GetQuoteResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetQuote_, context, request, response, std::move(f));
+}
+
+void ShippingService::Stub::async::GetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest* request, ::oteldemo::GetQuoteResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetQuote_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::GetQuoteResponse>* ShippingService::Stub::PrepareAsyncGetQuoteRaw(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::GetQuoteResponse, ::oteldemo::GetQuoteRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_GetQuote_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::GetQuoteResponse>* ShippingService::Stub::AsyncGetQuoteRaw(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncGetQuoteRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status ShippingService::Stub::ShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::oteldemo::ShipOrderResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::ShipOrderRequest, ::oteldemo::ShipOrderResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_ShipOrder_, context, request, response);
+}
+
+void ShippingService::Stub::async::ShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest* request, ::oteldemo::ShipOrderResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::ShipOrderRequest, ::oteldemo::ShipOrderResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ShipOrder_, context, request, response, std::move(f));
+}
+
+void ShippingService::Stub::async::ShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest* request, ::oteldemo::ShipOrderResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ShipOrder_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ShipOrderResponse>* ShippingService::Stub::PrepareAsyncShipOrderRaw(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::ShipOrderResponse, ::oteldemo::ShipOrderRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_ShipOrder_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ShipOrderResponse>* ShippingService::Stub::AsyncShipOrderRaw(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncShipOrderRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+ShippingService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      ShippingService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< ShippingService::Service, ::oteldemo::GetQuoteRequest, ::oteldemo::GetQuoteResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](ShippingService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::GetQuoteRequest* req,
+             ::oteldemo::GetQuoteResponse* resp) {
+               return service->GetQuote(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      ShippingService_method_names[1],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< ShippingService::Service, ::oteldemo::ShipOrderRequest, ::oteldemo::ShipOrderResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](ShippingService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::ShipOrderRequest* req,
+             ::oteldemo::ShipOrderResponse* resp) {
+               return service->ShipOrder(ctx, req, resp);
+             }, this)));
+}
+
+ShippingService::Service::~Service() {
+}
+
+::grpc::Status ShippingService::Service::GetQuote(::grpc::ServerContext* context, const ::oteldemo::GetQuoteRequest* request, ::oteldemo::GetQuoteResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status ShippingService::Service::ShipOrder(::grpc::ServerContext* context, const ::oteldemo::ShipOrderRequest* request, ::oteldemo::ShipOrderResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+static const char* CurrencyService_method_names[] = {
+  "/oteldemo.CurrencyService/GetSupportedCurrencies",
+  "/oteldemo.CurrencyService/Convert",
+};
+
+std::unique_ptr< CurrencyService::Stub> CurrencyService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< CurrencyService::Stub> stub(new CurrencyService::Stub(channel, options));
+  return stub;
+}
+
+CurrencyService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_GetSupportedCurrencies_(CurrencyService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_Convert_(CurrencyService_method_names[1], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status CurrencyService::Stub::GetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::oteldemo::GetSupportedCurrenciesResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::Empty, ::oteldemo::GetSupportedCurrenciesResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_GetSupportedCurrencies_, context, request, response);
+}
+
+void CurrencyService::Stub::async::GetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::GetSupportedCurrenciesResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::Empty, ::oteldemo::GetSupportedCurrenciesResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetSupportedCurrencies_, context, request, response, std::move(f));
+}
+
+void CurrencyService::Stub::async::GetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::GetSupportedCurrenciesResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetSupportedCurrencies_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::GetSupportedCurrenciesResponse>* CurrencyService::Stub::PrepareAsyncGetSupportedCurrenciesRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::GetSupportedCurrenciesResponse, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_GetSupportedCurrencies_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::GetSupportedCurrenciesResponse>* CurrencyService::Stub::AsyncGetSupportedCurrenciesRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncGetSupportedCurrenciesRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status CurrencyService::Stub::Convert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::oteldemo::Money* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::CurrencyConversionRequest, ::oteldemo::Money, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_Convert_, context, request, response);
+}
+
+void CurrencyService::Stub::async::Convert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest* request, ::oteldemo::Money* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::CurrencyConversionRequest, ::oteldemo::Money, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_Convert_, context, request, response, std::move(f));
+}
+
+void CurrencyService::Stub::async::Convert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest* request, ::oteldemo::Money* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_Convert_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Money>* CurrencyService::Stub::PrepareAsyncConvertRaw(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::Money, ::oteldemo::CurrencyConversionRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_Convert_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Money>* CurrencyService::Stub::AsyncConvertRaw(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncConvertRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+CurrencyService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      CurrencyService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< CurrencyService::Service, ::oteldemo::Empty, ::oteldemo::GetSupportedCurrenciesResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](CurrencyService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::Empty* req,
+             ::oteldemo::GetSupportedCurrenciesResponse* resp) {
+               return service->GetSupportedCurrencies(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      CurrencyService_method_names[1],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< CurrencyService::Service, ::oteldemo::CurrencyConversionRequest, ::oteldemo::Money, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](CurrencyService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::CurrencyConversionRequest* req,
+             ::oteldemo::Money* resp) {
+               return service->Convert(ctx, req, resp);
+             }, this)));
+}
+
+CurrencyService::Service::~Service() {
+}
+
+::grpc::Status CurrencyService::Service::GetSupportedCurrencies(::grpc::ServerContext* context, const ::oteldemo::Empty* request, ::oteldemo::GetSupportedCurrenciesResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status CurrencyService::Service::Convert(::grpc::ServerContext* context, const ::oteldemo::CurrencyConversionRequest* request, ::oteldemo::Money* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+static const char* PaymentService_method_names[] = {
+  "/oteldemo.PaymentService/Charge",
+};
+
+std::unique_ptr< PaymentService::Stub> PaymentService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< PaymentService::Stub> stub(new PaymentService::Stub(channel, options));
+  return stub;
+}
+
+PaymentService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_Charge_(PaymentService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status PaymentService::Stub::Charge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::oteldemo::ChargeResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::ChargeRequest, ::oteldemo::ChargeResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_Charge_, context, request, response);
+}
+
+void PaymentService::Stub::async::Charge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest* request, ::oteldemo::ChargeResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::ChargeRequest, ::oteldemo::ChargeResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_Charge_, context, request, response, std::move(f));
+}
+
+void PaymentService::Stub::async::Charge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest* request, ::oteldemo::ChargeResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_Charge_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ChargeResponse>* PaymentService::Stub::PrepareAsyncChargeRaw(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::ChargeResponse, ::oteldemo::ChargeRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_Charge_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ChargeResponse>* PaymentService::Stub::AsyncChargeRaw(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncChargeRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+PaymentService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      PaymentService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< PaymentService::Service, ::oteldemo::ChargeRequest, ::oteldemo::ChargeResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](PaymentService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::ChargeRequest* req,
+             ::oteldemo::ChargeResponse* resp) {
+               return service->Charge(ctx, req, resp);
+             }, this)));
+}
+
+PaymentService::Service::~Service() {
+}
+
+::grpc::Status PaymentService::Service::Charge(::grpc::ServerContext* context, const ::oteldemo::ChargeRequest* request, ::oteldemo::ChargeResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+static const char* EmailService_method_names[] = {
+  "/oteldemo.EmailService/SendOrderConfirmation",
+};
+
+std::unique_ptr< EmailService::Stub> EmailService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< EmailService::Stub> stub(new EmailService::Stub(channel, options));
+  return stub;
+}
+
+EmailService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_SendOrderConfirmation_(EmailService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status EmailService::Stub::SendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::oteldemo::Empty* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::SendOrderConfirmationRequest, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_SendOrderConfirmation_, context, request, response);
+}
+
+void EmailService::Stub::async::SendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest* request, ::oteldemo::Empty* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::SendOrderConfirmationRequest, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_SendOrderConfirmation_, context, request, response, std::move(f));
+}
+
+void EmailService::Stub::async::SendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest* request, ::oteldemo::Empty* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_SendOrderConfirmation_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* EmailService::Stub::PrepareAsyncSendOrderConfirmationRaw(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::Empty, ::oteldemo::SendOrderConfirmationRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_SendOrderConfirmation_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* EmailService::Stub::AsyncSendOrderConfirmationRaw(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncSendOrderConfirmationRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+EmailService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      EmailService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< EmailService::Service, ::oteldemo::SendOrderConfirmationRequest, ::oteldemo::Empty, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](EmailService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::SendOrderConfirmationRequest* req,
+             ::oteldemo::Empty* resp) {
+               return service->SendOrderConfirmation(ctx, req, resp);
+             }, this)));
+}
+
+EmailService::Service::~Service() {
+}
+
+::grpc::Status EmailService::Service::SendOrderConfirmation(::grpc::ServerContext* context, const ::oteldemo::SendOrderConfirmationRequest* request, ::oteldemo::Empty* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+static const char* CheckoutService_method_names[] = {
+  "/oteldemo.CheckoutService/PlaceOrder",
+};
+
+std::unique_ptr< CheckoutService::Stub> CheckoutService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< CheckoutService::Stub> stub(new CheckoutService::Stub(channel, options));
+  return stub;
+}
+
+CheckoutService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_PlaceOrder_(CheckoutService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status CheckoutService::Stub::PlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::oteldemo::PlaceOrderResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::PlaceOrderRequest, ::oteldemo::PlaceOrderResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_PlaceOrder_, context, request, response);
+}
+
+void CheckoutService::Stub::async::PlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest* request, ::oteldemo::PlaceOrderResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::PlaceOrderRequest, ::oteldemo::PlaceOrderResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_PlaceOrder_, context, request, response, std::move(f));
+}
+
+void CheckoutService::Stub::async::PlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest* request, ::oteldemo::PlaceOrderResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_PlaceOrder_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::PlaceOrderResponse>* CheckoutService::Stub::PrepareAsyncPlaceOrderRaw(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::PlaceOrderResponse, ::oteldemo::PlaceOrderRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_PlaceOrder_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::PlaceOrderResponse>* CheckoutService::Stub::AsyncPlaceOrderRaw(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncPlaceOrderRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+CheckoutService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      CheckoutService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< CheckoutService::Service, ::oteldemo::PlaceOrderRequest, ::oteldemo::PlaceOrderResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](CheckoutService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::PlaceOrderRequest* req,
+             ::oteldemo::PlaceOrderResponse* resp) {
+               return service->PlaceOrder(ctx, req, resp);
+             }, this)));
+}
+
+CheckoutService::Service::~Service() {
+}
+
+::grpc::Status CheckoutService::Service::PlaceOrder(::grpc::ServerContext* context, const ::oteldemo::PlaceOrderRequest* request, ::oteldemo::PlaceOrderResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+static const char* AdService_method_names[] = {
+  "/oteldemo.AdService/GetAds",
+};
+
+std::unique_ptr< AdService::Stub> AdService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< AdService::Stub> stub(new AdService::Stub(channel, options));
+  return stub;
+}
+
+AdService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_GetAds_(AdService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status AdService::Stub::GetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::oteldemo::AdResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::AdRequest, ::oteldemo::AdResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_GetAds_, context, request, response);
+}
+
+void AdService::Stub::async::GetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest* request, ::oteldemo::AdResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::AdRequest, ::oteldemo::AdResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetAds_, context, request, response, std::move(f));
+}
+
+void AdService::Stub::async::GetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest* request, ::oteldemo::AdResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetAds_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::AdResponse>* AdService::Stub::PrepareAsyncGetAdsRaw(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::AdResponse, ::oteldemo::AdRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_GetAds_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::AdResponse>* AdService::Stub::AsyncGetAdsRaw(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncGetAdsRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+AdService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      AdService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< AdService::Service, ::oteldemo::AdRequest, ::oteldemo::AdResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](AdService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::AdRequest* req,
+             ::oteldemo::AdResponse* resp) {
+               return service->GetAds(ctx, req, resp);
+             }, this)));
+}
+
+AdService::Service::~Service() {
+}
+
+::grpc::Status AdService::Service::GetAds(::grpc::ServerContext* context, const ::oteldemo::AdRequest* request, ::oteldemo::AdResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+static const char* FeatureFlagService_method_names[] = {
+  "/oteldemo.FeatureFlagService/GetFlag",
+  "/oteldemo.FeatureFlagService/CreateFlag",
+  "/oteldemo.FeatureFlagService/UpdateFlag",
+  "/oteldemo.FeatureFlagService/ListFlags",
+  "/oteldemo.FeatureFlagService/DeleteFlag",
+};
+
+std::unique_ptr< FeatureFlagService::Stub> FeatureFlagService::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< FeatureFlagService::Stub> stub(new FeatureFlagService::Stub(channel, options));
+  return stub;
+}
+
+FeatureFlagService::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_GetFlag_(FeatureFlagService_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_CreateFlag_(FeatureFlagService_method_names[1], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_UpdateFlag_(FeatureFlagService_method_names[2], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_ListFlags_(FeatureFlagService_method_names[3], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  , rpcmethod_DeleteFlag_(FeatureFlagService_method_names[4], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status FeatureFlagService::Stub::GetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::oteldemo::GetFlagResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::GetFlagRequest, ::oteldemo::GetFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_GetFlag_, context, request, response);
+}
+
+void FeatureFlagService::Stub::async::GetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest* request, ::oteldemo::GetFlagResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::GetFlagRequest, ::oteldemo::GetFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetFlag_, context, request, response, std::move(f));
+}
+
+void FeatureFlagService::Stub::async::GetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest* request, ::oteldemo::GetFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_GetFlag_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::GetFlagResponse>* FeatureFlagService::Stub::PrepareAsyncGetFlagRaw(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::GetFlagResponse, ::oteldemo::GetFlagRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_GetFlag_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::GetFlagResponse>* FeatureFlagService::Stub::AsyncGetFlagRaw(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncGetFlagRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status FeatureFlagService::Stub::CreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::oteldemo::CreateFlagResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::CreateFlagRequest, ::oteldemo::CreateFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_CreateFlag_, context, request, response);
+}
+
+void FeatureFlagService::Stub::async::CreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest* request, ::oteldemo::CreateFlagResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::CreateFlagRequest, ::oteldemo::CreateFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_CreateFlag_, context, request, response, std::move(f));
+}
+
+void FeatureFlagService::Stub::async::CreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest* request, ::oteldemo::CreateFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_CreateFlag_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::CreateFlagResponse>* FeatureFlagService::Stub::PrepareAsyncCreateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::CreateFlagResponse, ::oteldemo::CreateFlagRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_CreateFlag_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::CreateFlagResponse>* FeatureFlagService::Stub::AsyncCreateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncCreateFlagRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status FeatureFlagService::Stub::UpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::oteldemo::UpdateFlagResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::UpdateFlagRequest, ::oteldemo::UpdateFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_UpdateFlag_, context, request, response);
+}
+
+void FeatureFlagService::Stub::async::UpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest* request, ::oteldemo::UpdateFlagResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::UpdateFlagRequest, ::oteldemo::UpdateFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_UpdateFlag_, context, request, response, std::move(f));
+}
+
+void FeatureFlagService::Stub::async::UpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest* request, ::oteldemo::UpdateFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_UpdateFlag_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::UpdateFlagResponse>* FeatureFlagService::Stub::PrepareAsyncUpdateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::UpdateFlagResponse, ::oteldemo::UpdateFlagRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_UpdateFlag_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::UpdateFlagResponse>* FeatureFlagService::Stub::AsyncUpdateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncUpdateFlagRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status FeatureFlagService::Stub::ListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::oteldemo::ListFlagsResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::ListFlagsRequest, ::oteldemo::ListFlagsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_ListFlags_, context, request, response);
+}
+
+void FeatureFlagService::Stub::async::ListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest* request, ::oteldemo::ListFlagsResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::ListFlagsRequest, ::oteldemo::ListFlagsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ListFlags_, context, request, response, std::move(f));
+}
+
+void FeatureFlagService::Stub::async::ListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest* request, ::oteldemo::ListFlagsResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_ListFlags_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ListFlagsResponse>* FeatureFlagService::Stub::PrepareAsyncListFlagsRaw(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::ListFlagsResponse, ::oteldemo::ListFlagsRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_ListFlags_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::ListFlagsResponse>* FeatureFlagService::Stub::AsyncListFlagsRaw(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncListFlagsRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+::grpc::Status FeatureFlagService::Stub::DeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::oteldemo::DeleteFlagResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::oteldemo::DeleteFlagRequest, ::oteldemo::DeleteFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_DeleteFlag_, context, request, response);
+}
+
+void FeatureFlagService::Stub::async::DeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest* request, ::oteldemo::DeleteFlagResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::oteldemo::DeleteFlagRequest, ::oteldemo::DeleteFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_DeleteFlag_, context, request, response, std::move(f));
+}
+
+void FeatureFlagService::Stub::async::DeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest* request, ::oteldemo::DeleteFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_DeleteFlag_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::DeleteFlagResponse>* FeatureFlagService::Stub::PrepareAsyncDeleteFlagRaw(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::oteldemo::DeleteFlagResponse, ::oteldemo::DeleteFlagRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_DeleteFlag_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::oteldemo::DeleteFlagResponse>* FeatureFlagService::Stub::AsyncDeleteFlagRaw(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncDeleteFlagRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+FeatureFlagService::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      FeatureFlagService_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< FeatureFlagService::Service, ::oteldemo::GetFlagRequest, ::oteldemo::GetFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](FeatureFlagService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::GetFlagRequest* req,
+             ::oteldemo::GetFlagResponse* resp) {
+               return service->GetFlag(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      FeatureFlagService_method_names[1],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< FeatureFlagService::Service, ::oteldemo::CreateFlagRequest, ::oteldemo::CreateFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](FeatureFlagService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::CreateFlagRequest* req,
+             ::oteldemo::CreateFlagResponse* resp) {
+               return service->CreateFlag(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      FeatureFlagService_method_names[2],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< FeatureFlagService::Service, ::oteldemo::UpdateFlagRequest, ::oteldemo::UpdateFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](FeatureFlagService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::UpdateFlagRequest* req,
+             ::oteldemo::UpdateFlagResponse* resp) {
+               return service->UpdateFlag(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      FeatureFlagService_method_names[3],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< FeatureFlagService::Service, ::oteldemo::ListFlagsRequest, ::oteldemo::ListFlagsResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](FeatureFlagService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::ListFlagsRequest* req,
+             ::oteldemo::ListFlagsResponse* resp) {
+               return service->ListFlags(ctx, req, resp);
+             }, this)));
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      FeatureFlagService_method_names[4],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< FeatureFlagService::Service, ::oteldemo::DeleteFlagRequest, ::oteldemo::DeleteFlagResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](FeatureFlagService::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::oteldemo::DeleteFlagRequest* req,
+             ::oteldemo::DeleteFlagResponse* resp) {
+               return service->DeleteFlag(ctx, req, resp);
+             }, this)));
+}
+
+FeatureFlagService::Service::~Service() {
+}
+
+::grpc::Status FeatureFlagService::Service::GetFlag(::grpc::ServerContext* context, const ::oteldemo::GetFlagRequest* request, ::oteldemo::GetFlagResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status FeatureFlagService::Service::CreateFlag(::grpc::ServerContext* context, const ::oteldemo::CreateFlagRequest* request, ::oteldemo::CreateFlagResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status FeatureFlagService::Service::UpdateFlag(::grpc::ServerContext* context, const ::oteldemo::UpdateFlagRequest* request, ::oteldemo::UpdateFlagResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status FeatureFlagService::Service::ListFlags(::grpc::ServerContext* context, const ::oteldemo::ListFlagsRequest* request, ::oteldemo::ListFlagsResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+::grpc::Status FeatureFlagService::Service::DeleteFlag(::grpc::ServerContext* context, const ::oteldemo::DeleteFlagRequest* request, ::oteldemo::DeleteFlagResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+}  // namespace oteldemo
+
diff --git a/src/currency/build/generated/proto/demo.grpc.pb.h b/src/currency/build/generated/proto/demo.grpc.pb.h
new file mode 100644
index 0000000..8287173
--- /dev/null
+++ b/src/currency/build/generated/proto/demo.grpc.pb.h
@@ -0,0 +1,3708 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: demo.proto
+// Original file comments:
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef GRPC_demo_2eproto__INCLUDED
+#define GRPC_demo_2eproto__INCLUDED
+
+#include "demo.pb.h"
+
+#include <functional>
+#include <grpcpp/generic/async_generic_service.h>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/proto_utils.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/support/status.h>
+#include <grpcpp/support/stub_options.h>
+#include <grpcpp/support/sync_stream.h>
+
+namespace oteldemo {
+
+// -----------------Cart service-----------------
+//
+class CartService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.CartService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status AddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::oteldemo::Empty* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>> AsyncAddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>>(AsyncAddItemRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>> PrepareAsyncAddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>>(PrepareAsyncAddItemRaw(context, request, cq));
+    }
+    virtual ::grpc::Status GetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::oteldemo::Cart* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Cart>> AsyncGetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Cart>>(AsyncGetCartRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Cart>> PrepareAsyncGetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Cart>>(PrepareAsyncGetCartRaw(context, request, cq));
+    }
+    virtual ::grpc::Status EmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::oteldemo::Empty* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>> AsyncEmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>>(AsyncEmptyCartRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>> PrepareAsyncEmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>>(PrepareAsyncEmptyCartRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void AddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest* request, ::oteldemo::Empty* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void AddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest* request, ::oteldemo::Empty* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void GetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest* request, ::oteldemo::Cart* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void GetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest* request, ::oteldemo::Cart* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void EmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest* request, ::oteldemo::Empty* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void EmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest* request, ::oteldemo::Empty* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>* AsyncAddItemRaw(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>* PrepareAsyncAddItemRaw(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Cart>* AsyncGetCartRaw(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Cart>* PrepareAsyncGetCartRaw(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>* AsyncEmptyCartRaw(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>* PrepareAsyncEmptyCartRaw(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status AddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::oteldemo::Empty* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>> AsyncAddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>>(AsyncAddItemRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>> PrepareAsyncAddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>>(PrepareAsyncAddItemRaw(context, request, cq));
+    }
+    ::grpc::Status GetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::oteldemo::Cart* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Cart>> AsyncGetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Cart>>(AsyncGetCartRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Cart>> PrepareAsyncGetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Cart>>(PrepareAsyncGetCartRaw(context, request, cq));
+    }
+    ::grpc::Status EmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::oteldemo::Empty* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>> AsyncEmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>>(AsyncEmptyCartRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>> PrepareAsyncEmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>>(PrepareAsyncEmptyCartRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void AddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest* request, ::oteldemo::Empty* response, std::function<void(::grpc::Status)>) override;
+      void AddItem(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest* request, ::oteldemo::Empty* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void GetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest* request, ::oteldemo::Cart* response, std::function<void(::grpc::Status)>) override;
+      void GetCart(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest* request, ::oteldemo::Cart* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void EmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest* request, ::oteldemo::Empty* response, std::function<void(::grpc::Status)>) override;
+      void EmptyCart(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest* request, ::oteldemo::Empty* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* AsyncAddItemRaw(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* PrepareAsyncAddItemRaw(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Cart>* AsyncGetCartRaw(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Cart>* PrepareAsyncGetCartRaw(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* AsyncEmptyCartRaw(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* PrepareAsyncEmptyCartRaw(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_AddItem_;
+    const ::grpc::internal::RpcMethod rpcmethod_GetCart_;
+    const ::grpc::internal::RpcMethod rpcmethod_EmptyCart_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status AddItem(::grpc::ServerContext* context, const ::oteldemo::AddItemRequest* request, ::oteldemo::Empty* response);
+    virtual ::grpc::Status GetCart(::grpc::ServerContext* context, const ::oteldemo::GetCartRequest* request, ::oteldemo::Cart* response);
+    virtual ::grpc::Status EmptyCart(::grpc::ServerContext* context, const ::oteldemo::EmptyCartRequest* request, ::oteldemo::Empty* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_AddItem : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_AddItem() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_AddItem() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status AddItem(::grpc::ServerContext* /*context*/, const ::oteldemo::AddItemRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestAddItem(::grpc::ServerContext* context, ::oteldemo::AddItemRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::Empty>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_GetCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_GetCart() {
+      ::grpc::Service::MarkMethodAsync(1);
+    }
+    ~WithAsyncMethod_GetCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetCart(::grpc::ServerContext* /*context*/, const ::oteldemo::GetCartRequest* /*request*/, ::oteldemo::Cart* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetCart(::grpc::ServerContext* context, ::oteldemo::GetCartRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::Cart>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_EmptyCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_EmptyCart() {
+      ::grpc::Service::MarkMethodAsync(2);
+    }
+    ~WithAsyncMethod_EmptyCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status EmptyCart(::grpc::ServerContext* /*context*/, const ::oteldemo::EmptyCartRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestEmptyCart(::grpc::ServerContext* context, ::oteldemo::EmptyCartRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::Empty>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(2, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_AddItem<WithAsyncMethod_GetCart<WithAsyncMethod_EmptyCart<Service > > > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_AddItem : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_AddItem() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::AddItemRequest, ::oteldemo::Empty>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::AddItemRequest* request, ::oteldemo::Empty* response) { return this->AddItem(context, request, response); }));}
+    void SetMessageAllocatorFor_AddItem(
+        ::grpc::MessageAllocator< ::oteldemo::AddItemRequest, ::oteldemo::Empty>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::AddItemRequest, ::oteldemo::Empty>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_AddItem() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status AddItem(::grpc::ServerContext* /*context*/, const ::oteldemo::AddItemRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* AddItem(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::AddItemRequest* /*request*/, ::oteldemo::Empty* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_GetCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_GetCart() {
+      ::grpc::Service::MarkMethodCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::GetCartRequest, ::oteldemo::Cart>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::GetCartRequest* request, ::oteldemo::Cart* response) { return this->GetCart(context, request, response); }));}
+    void SetMessageAllocatorFor_GetCart(
+        ::grpc::MessageAllocator< ::oteldemo::GetCartRequest, ::oteldemo::Cart>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(1);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::GetCartRequest, ::oteldemo::Cart>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_GetCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetCart(::grpc::ServerContext* /*context*/, const ::oteldemo::GetCartRequest* /*request*/, ::oteldemo::Cart* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetCart(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::GetCartRequest* /*request*/, ::oteldemo::Cart* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_EmptyCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_EmptyCart() {
+      ::grpc::Service::MarkMethodCallback(2,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::EmptyCartRequest, ::oteldemo::Empty>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::EmptyCartRequest* request, ::oteldemo::Empty* response) { return this->EmptyCart(context, request, response); }));}
+    void SetMessageAllocatorFor_EmptyCart(
+        ::grpc::MessageAllocator< ::oteldemo::EmptyCartRequest, ::oteldemo::Empty>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(2);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::EmptyCartRequest, ::oteldemo::Empty>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_EmptyCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status EmptyCart(::grpc::ServerContext* /*context*/, const ::oteldemo::EmptyCartRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* EmptyCart(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::EmptyCartRequest* /*request*/, ::oteldemo::Empty* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_AddItem<WithCallbackMethod_GetCart<WithCallbackMethod_EmptyCart<Service > > > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_AddItem : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_AddItem() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_AddItem() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status AddItem(::grpc::ServerContext* /*context*/, const ::oteldemo::AddItemRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_GetCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_GetCart() {
+      ::grpc::Service::MarkMethodGeneric(1);
+    }
+    ~WithGenericMethod_GetCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetCart(::grpc::ServerContext* /*context*/, const ::oteldemo::GetCartRequest* /*request*/, ::oteldemo::Cart* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_EmptyCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_EmptyCart() {
+      ::grpc::Service::MarkMethodGeneric(2);
+    }
+    ~WithGenericMethod_EmptyCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status EmptyCart(::grpc::ServerContext* /*context*/, const ::oteldemo::EmptyCartRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_AddItem : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_AddItem() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_AddItem() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status AddItem(::grpc::ServerContext* /*context*/, const ::oteldemo::AddItemRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestAddItem(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_GetCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_GetCart() {
+      ::grpc::Service::MarkMethodRaw(1);
+    }
+    ~WithRawMethod_GetCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetCart(::grpc::ServerContext* /*context*/, const ::oteldemo::GetCartRequest* /*request*/, ::oteldemo::Cart* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetCart(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_EmptyCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_EmptyCart() {
+      ::grpc::Service::MarkMethodRaw(2);
+    }
+    ~WithRawMethod_EmptyCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status EmptyCart(::grpc::ServerContext* /*context*/, const ::oteldemo::EmptyCartRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestEmptyCart(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(2, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_AddItem : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_AddItem() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->AddItem(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_AddItem() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status AddItem(::grpc::ServerContext* /*context*/, const ::oteldemo::AddItemRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* AddItem(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_GetCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_GetCart() {
+      ::grpc::Service::MarkMethodRawCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->GetCart(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_GetCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetCart(::grpc::ServerContext* /*context*/, const ::oteldemo::GetCartRequest* /*request*/, ::oteldemo::Cart* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetCart(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_EmptyCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_EmptyCart() {
+      ::grpc::Service::MarkMethodRawCallback(2,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->EmptyCart(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_EmptyCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status EmptyCart(::grpc::ServerContext* /*context*/, const ::oteldemo::EmptyCartRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* EmptyCart(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_AddItem : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_AddItem() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::AddItemRequest, ::oteldemo::Empty>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::AddItemRequest, ::oteldemo::Empty>* streamer) {
+                       return this->StreamedAddItem(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_AddItem() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status AddItem(::grpc::ServerContext* /*context*/, const ::oteldemo::AddItemRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedAddItem(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::AddItemRequest,::oteldemo::Empty>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_GetCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_GetCart() {
+      ::grpc::Service::MarkMethodStreamed(1,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::GetCartRequest, ::oteldemo::Cart>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::GetCartRequest, ::oteldemo::Cart>* streamer) {
+                       return this->StreamedGetCart(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_GetCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status GetCart(::grpc::ServerContext* /*context*/, const ::oteldemo::GetCartRequest* /*request*/, ::oteldemo::Cart* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedGetCart(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::GetCartRequest,::oteldemo::Cart>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_EmptyCart : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_EmptyCart() {
+      ::grpc::Service::MarkMethodStreamed(2,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::EmptyCartRequest, ::oteldemo::Empty>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::EmptyCartRequest, ::oteldemo::Empty>* streamer) {
+                       return this->StreamedEmptyCart(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_EmptyCart() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status EmptyCart(::grpc::ServerContext* /*context*/, const ::oteldemo::EmptyCartRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedEmptyCart(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::EmptyCartRequest,::oteldemo::Empty>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_AddItem<WithStreamedUnaryMethod_GetCart<WithStreamedUnaryMethod_EmptyCart<Service > > > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_AddItem<WithStreamedUnaryMethod_GetCart<WithStreamedUnaryMethod_EmptyCart<Service > > > StreamedService;
+};
+
+// ---------------Recommendation service----------
+//
+class RecommendationService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.RecommendationService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status ListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::oteldemo::ListRecommendationsResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListRecommendationsResponse>> AsyncListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListRecommendationsResponse>>(AsyncListRecommendationsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListRecommendationsResponse>> PrepareAsyncListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListRecommendationsResponse>>(PrepareAsyncListRecommendationsRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void ListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest* request, ::oteldemo::ListRecommendationsResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void ListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest* request, ::oteldemo::ListRecommendationsResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListRecommendationsResponse>* AsyncListRecommendationsRaw(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListRecommendationsResponse>* PrepareAsyncListRecommendationsRaw(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status ListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::oteldemo::ListRecommendationsResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListRecommendationsResponse>> AsyncListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListRecommendationsResponse>>(AsyncListRecommendationsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListRecommendationsResponse>> PrepareAsyncListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListRecommendationsResponse>>(PrepareAsyncListRecommendationsRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void ListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest* request, ::oteldemo::ListRecommendationsResponse* response, std::function<void(::grpc::Status)>) override;
+      void ListRecommendations(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest* request, ::oteldemo::ListRecommendationsResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ListRecommendationsResponse>* AsyncListRecommendationsRaw(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ListRecommendationsResponse>* PrepareAsyncListRecommendationsRaw(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_ListRecommendations_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status ListRecommendations(::grpc::ServerContext* context, const ::oteldemo::ListRecommendationsRequest* request, ::oteldemo::ListRecommendationsResponse* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_ListRecommendations : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_ListRecommendations() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_ListRecommendations() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListRecommendations(::grpc::ServerContext* /*context*/, const ::oteldemo::ListRecommendationsRequest* /*request*/, ::oteldemo::ListRecommendationsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestListRecommendations(::grpc::ServerContext* context, ::oteldemo::ListRecommendationsRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::ListRecommendationsResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_ListRecommendations<Service > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_ListRecommendations : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_ListRecommendations() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::ListRecommendationsRequest, ::oteldemo::ListRecommendationsResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::ListRecommendationsRequest* request, ::oteldemo::ListRecommendationsResponse* response) { return this->ListRecommendations(context, request, response); }));}
+    void SetMessageAllocatorFor_ListRecommendations(
+        ::grpc::MessageAllocator< ::oteldemo::ListRecommendationsRequest, ::oteldemo::ListRecommendationsResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::ListRecommendationsRequest, ::oteldemo::ListRecommendationsResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_ListRecommendations() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListRecommendations(::grpc::ServerContext* /*context*/, const ::oteldemo::ListRecommendationsRequest* /*request*/, ::oteldemo::ListRecommendationsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ListRecommendations(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::ListRecommendationsRequest* /*request*/, ::oteldemo::ListRecommendationsResponse* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_ListRecommendations<Service > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_ListRecommendations : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_ListRecommendations() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_ListRecommendations() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListRecommendations(::grpc::ServerContext* /*context*/, const ::oteldemo::ListRecommendationsRequest* /*request*/, ::oteldemo::ListRecommendationsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_ListRecommendations : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_ListRecommendations() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_ListRecommendations() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListRecommendations(::grpc::ServerContext* /*context*/, const ::oteldemo::ListRecommendationsRequest* /*request*/, ::oteldemo::ListRecommendationsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestListRecommendations(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_ListRecommendations : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_ListRecommendations() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->ListRecommendations(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_ListRecommendations() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListRecommendations(::grpc::ServerContext* /*context*/, const ::oteldemo::ListRecommendationsRequest* /*request*/, ::oteldemo::ListRecommendationsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ListRecommendations(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_ListRecommendations : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_ListRecommendations() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::ListRecommendationsRequest, ::oteldemo::ListRecommendationsResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::ListRecommendationsRequest, ::oteldemo::ListRecommendationsResponse>* streamer) {
+                       return this->StreamedListRecommendations(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_ListRecommendations() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status ListRecommendations(::grpc::ServerContext* /*context*/, const ::oteldemo::ListRecommendationsRequest* /*request*/, ::oteldemo::ListRecommendationsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedListRecommendations(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::ListRecommendationsRequest,::oteldemo::ListRecommendationsResponse>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_ListRecommendations<Service > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_ListRecommendations<Service > StreamedService;
+};
+
+// ---------------Product Catalog----------------
+//
+class ProductCatalogService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.ProductCatalogService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status ListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::oteldemo::ListProductsResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListProductsResponse>> AsyncListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListProductsResponse>>(AsyncListProductsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListProductsResponse>> PrepareAsyncListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListProductsResponse>>(PrepareAsyncListProductsRaw(context, request, cq));
+    }
+    virtual ::grpc::Status GetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::oteldemo::Product* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Product>> AsyncGetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Product>>(AsyncGetProductRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Product>> PrepareAsyncGetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Product>>(PrepareAsyncGetProductRaw(context, request, cq));
+    }
+    virtual ::grpc::Status SearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::oteldemo::SearchProductsResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::SearchProductsResponse>> AsyncSearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::SearchProductsResponse>>(AsyncSearchProductsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::SearchProductsResponse>> PrepareAsyncSearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::SearchProductsResponse>>(PrepareAsyncSearchProductsRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void ListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::ListProductsResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void ListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::ListProductsResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void GetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest* request, ::oteldemo::Product* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void GetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest* request, ::oteldemo::Product* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void SearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest* request, ::oteldemo::SearchProductsResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void SearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest* request, ::oteldemo::SearchProductsResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListProductsResponse>* AsyncListProductsRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListProductsResponse>* PrepareAsyncListProductsRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Product>* AsyncGetProductRaw(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Product>* PrepareAsyncGetProductRaw(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::SearchProductsResponse>* AsyncSearchProductsRaw(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::SearchProductsResponse>* PrepareAsyncSearchProductsRaw(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status ListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::oteldemo::ListProductsResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListProductsResponse>> AsyncListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListProductsResponse>>(AsyncListProductsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListProductsResponse>> PrepareAsyncListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListProductsResponse>>(PrepareAsyncListProductsRaw(context, request, cq));
+    }
+    ::grpc::Status GetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::oteldemo::Product* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Product>> AsyncGetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Product>>(AsyncGetProductRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Product>> PrepareAsyncGetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Product>>(PrepareAsyncGetProductRaw(context, request, cq));
+    }
+    ::grpc::Status SearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::oteldemo::SearchProductsResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::SearchProductsResponse>> AsyncSearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::SearchProductsResponse>>(AsyncSearchProductsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::SearchProductsResponse>> PrepareAsyncSearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::SearchProductsResponse>>(PrepareAsyncSearchProductsRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void ListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::ListProductsResponse* response, std::function<void(::grpc::Status)>) override;
+      void ListProducts(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::ListProductsResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void GetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest* request, ::oteldemo::Product* response, std::function<void(::grpc::Status)>) override;
+      void GetProduct(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest* request, ::oteldemo::Product* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void SearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest* request, ::oteldemo::SearchProductsResponse* response, std::function<void(::grpc::Status)>) override;
+      void SearchProducts(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest* request, ::oteldemo::SearchProductsResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ListProductsResponse>* AsyncListProductsRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ListProductsResponse>* PrepareAsyncListProductsRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Product>* AsyncGetProductRaw(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Product>* PrepareAsyncGetProductRaw(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::SearchProductsResponse>* AsyncSearchProductsRaw(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::SearchProductsResponse>* PrepareAsyncSearchProductsRaw(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_ListProducts_;
+    const ::grpc::internal::RpcMethod rpcmethod_GetProduct_;
+    const ::grpc::internal::RpcMethod rpcmethod_SearchProducts_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status ListProducts(::grpc::ServerContext* context, const ::oteldemo::Empty* request, ::oteldemo::ListProductsResponse* response);
+    virtual ::grpc::Status GetProduct(::grpc::ServerContext* context, const ::oteldemo::GetProductRequest* request, ::oteldemo::Product* response);
+    virtual ::grpc::Status SearchProducts(::grpc::ServerContext* context, const ::oteldemo::SearchProductsRequest* request, ::oteldemo::SearchProductsResponse* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_ListProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_ListProducts() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_ListProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::ListProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestListProducts(::grpc::ServerContext* context, ::oteldemo::Empty* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::ListProductsResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_GetProduct : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_GetProduct() {
+      ::grpc::Service::MarkMethodAsync(1);
+    }
+    ~WithAsyncMethod_GetProduct() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetProduct(::grpc::ServerContext* /*context*/, const ::oteldemo::GetProductRequest* /*request*/, ::oteldemo::Product* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetProduct(::grpc::ServerContext* context, ::oteldemo::GetProductRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::Product>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_SearchProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_SearchProducts() {
+      ::grpc::Service::MarkMethodAsync(2);
+    }
+    ~WithAsyncMethod_SearchProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SearchProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::SearchProductsRequest* /*request*/, ::oteldemo::SearchProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestSearchProducts(::grpc::ServerContext* context, ::oteldemo::SearchProductsRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::SearchProductsResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(2, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_ListProducts<WithAsyncMethod_GetProduct<WithAsyncMethod_SearchProducts<Service > > > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_ListProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_ListProducts() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::Empty, ::oteldemo::ListProductsResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::Empty* request, ::oteldemo::ListProductsResponse* response) { return this->ListProducts(context, request, response); }));}
+    void SetMessageAllocatorFor_ListProducts(
+        ::grpc::MessageAllocator< ::oteldemo::Empty, ::oteldemo::ListProductsResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::Empty, ::oteldemo::ListProductsResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_ListProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::ListProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ListProducts(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::ListProductsResponse* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_GetProduct : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_GetProduct() {
+      ::grpc::Service::MarkMethodCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::GetProductRequest, ::oteldemo::Product>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::GetProductRequest* request, ::oteldemo::Product* response) { return this->GetProduct(context, request, response); }));}
+    void SetMessageAllocatorFor_GetProduct(
+        ::grpc::MessageAllocator< ::oteldemo::GetProductRequest, ::oteldemo::Product>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(1);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::GetProductRequest, ::oteldemo::Product>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_GetProduct() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetProduct(::grpc::ServerContext* /*context*/, const ::oteldemo::GetProductRequest* /*request*/, ::oteldemo::Product* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetProduct(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::GetProductRequest* /*request*/, ::oteldemo::Product* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_SearchProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_SearchProducts() {
+      ::grpc::Service::MarkMethodCallback(2,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::SearchProductsRequest, ::oteldemo::SearchProductsResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::SearchProductsRequest* request, ::oteldemo::SearchProductsResponse* response) { return this->SearchProducts(context, request, response); }));}
+    void SetMessageAllocatorFor_SearchProducts(
+        ::grpc::MessageAllocator< ::oteldemo::SearchProductsRequest, ::oteldemo::SearchProductsResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(2);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::SearchProductsRequest, ::oteldemo::SearchProductsResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_SearchProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SearchProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::SearchProductsRequest* /*request*/, ::oteldemo::SearchProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* SearchProducts(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::SearchProductsRequest* /*request*/, ::oteldemo::SearchProductsResponse* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_ListProducts<WithCallbackMethod_GetProduct<WithCallbackMethod_SearchProducts<Service > > > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_ListProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_ListProducts() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_ListProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::ListProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_GetProduct : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_GetProduct() {
+      ::grpc::Service::MarkMethodGeneric(1);
+    }
+    ~WithGenericMethod_GetProduct() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetProduct(::grpc::ServerContext* /*context*/, const ::oteldemo::GetProductRequest* /*request*/, ::oteldemo::Product* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_SearchProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_SearchProducts() {
+      ::grpc::Service::MarkMethodGeneric(2);
+    }
+    ~WithGenericMethod_SearchProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SearchProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::SearchProductsRequest* /*request*/, ::oteldemo::SearchProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_ListProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_ListProducts() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_ListProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::ListProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestListProducts(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_GetProduct : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_GetProduct() {
+      ::grpc::Service::MarkMethodRaw(1);
+    }
+    ~WithRawMethod_GetProduct() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetProduct(::grpc::ServerContext* /*context*/, const ::oteldemo::GetProductRequest* /*request*/, ::oteldemo::Product* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetProduct(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_SearchProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_SearchProducts() {
+      ::grpc::Service::MarkMethodRaw(2);
+    }
+    ~WithRawMethod_SearchProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SearchProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::SearchProductsRequest* /*request*/, ::oteldemo::SearchProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestSearchProducts(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(2, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_ListProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_ListProducts() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->ListProducts(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_ListProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::ListProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ListProducts(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_GetProduct : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_GetProduct() {
+      ::grpc::Service::MarkMethodRawCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->GetProduct(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_GetProduct() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetProduct(::grpc::ServerContext* /*context*/, const ::oteldemo::GetProductRequest* /*request*/, ::oteldemo::Product* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetProduct(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_SearchProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_SearchProducts() {
+      ::grpc::Service::MarkMethodRawCallback(2,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->SearchProducts(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_SearchProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SearchProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::SearchProductsRequest* /*request*/, ::oteldemo::SearchProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* SearchProducts(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_ListProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_ListProducts() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::Empty, ::oteldemo::ListProductsResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::Empty, ::oteldemo::ListProductsResponse>* streamer) {
+                       return this->StreamedListProducts(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_ListProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status ListProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::ListProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedListProducts(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::Empty,::oteldemo::ListProductsResponse>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_GetProduct : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_GetProduct() {
+      ::grpc::Service::MarkMethodStreamed(1,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::GetProductRequest, ::oteldemo::Product>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::GetProductRequest, ::oteldemo::Product>* streamer) {
+                       return this->StreamedGetProduct(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_GetProduct() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status GetProduct(::grpc::ServerContext* /*context*/, const ::oteldemo::GetProductRequest* /*request*/, ::oteldemo::Product* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedGetProduct(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::GetProductRequest,::oteldemo::Product>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_SearchProducts : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_SearchProducts() {
+      ::grpc::Service::MarkMethodStreamed(2,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::SearchProductsRequest, ::oteldemo::SearchProductsResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::SearchProductsRequest, ::oteldemo::SearchProductsResponse>* streamer) {
+                       return this->StreamedSearchProducts(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_SearchProducts() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status SearchProducts(::grpc::ServerContext* /*context*/, const ::oteldemo::SearchProductsRequest* /*request*/, ::oteldemo::SearchProductsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedSearchProducts(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::SearchProductsRequest,::oteldemo::SearchProductsResponse>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_ListProducts<WithStreamedUnaryMethod_GetProduct<WithStreamedUnaryMethod_SearchProducts<Service > > > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_ListProducts<WithStreamedUnaryMethod_GetProduct<WithStreamedUnaryMethod_SearchProducts<Service > > > StreamedService;
+};
+
+// ---------------Shipping Service----------
+//
+class ShippingService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.ShippingService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status GetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::oteldemo::GetQuoteResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetQuoteResponse>> AsyncGetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetQuoteResponse>>(AsyncGetQuoteRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetQuoteResponse>> PrepareAsyncGetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetQuoteResponse>>(PrepareAsyncGetQuoteRaw(context, request, cq));
+    }
+    virtual ::grpc::Status ShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::oteldemo::ShipOrderResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ShipOrderResponse>> AsyncShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ShipOrderResponse>>(AsyncShipOrderRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ShipOrderResponse>> PrepareAsyncShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ShipOrderResponse>>(PrepareAsyncShipOrderRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void GetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest* request, ::oteldemo::GetQuoteResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void GetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest* request, ::oteldemo::GetQuoteResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void ShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest* request, ::oteldemo::ShipOrderResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void ShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest* request, ::oteldemo::ShipOrderResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetQuoteResponse>* AsyncGetQuoteRaw(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetQuoteResponse>* PrepareAsyncGetQuoteRaw(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ShipOrderResponse>* AsyncShipOrderRaw(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ShipOrderResponse>* PrepareAsyncShipOrderRaw(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status GetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::oteldemo::GetQuoteResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetQuoteResponse>> AsyncGetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetQuoteResponse>>(AsyncGetQuoteRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetQuoteResponse>> PrepareAsyncGetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetQuoteResponse>>(PrepareAsyncGetQuoteRaw(context, request, cq));
+    }
+    ::grpc::Status ShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::oteldemo::ShipOrderResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ShipOrderResponse>> AsyncShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ShipOrderResponse>>(AsyncShipOrderRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ShipOrderResponse>> PrepareAsyncShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ShipOrderResponse>>(PrepareAsyncShipOrderRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void GetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest* request, ::oteldemo::GetQuoteResponse* response, std::function<void(::grpc::Status)>) override;
+      void GetQuote(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest* request, ::oteldemo::GetQuoteResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void ShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest* request, ::oteldemo::ShipOrderResponse* response, std::function<void(::grpc::Status)>) override;
+      void ShipOrder(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest* request, ::oteldemo::ShipOrderResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::GetQuoteResponse>* AsyncGetQuoteRaw(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::GetQuoteResponse>* PrepareAsyncGetQuoteRaw(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ShipOrderResponse>* AsyncShipOrderRaw(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ShipOrderResponse>* PrepareAsyncShipOrderRaw(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_GetQuote_;
+    const ::grpc::internal::RpcMethod rpcmethod_ShipOrder_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status GetQuote(::grpc::ServerContext* context, const ::oteldemo::GetQuoteRequest* request, ::oteldemo::GetQuoteResponse* response);
+    virtual ::grpc::Status ShipOrder(::grpc::ServerContext* context, const ::oteldemo::ShipOrderRequest* request, ::oteldemo::ShipOrderResponse* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_GetQuote : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_GetQuote() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_GetQuote() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetQuote(::grpc::ServerContext* /*context*/, const ::oteldemo::GetQuoteRequest* /*request*/, ::oteldemo::GetQuoteResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetQuote(::grpc::ServerContext* context, ::oteldemo::GetQuoteRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::GetQuoteResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_ShipOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_ShipOrder() {
+      ::grpc::Service::MarkMethodAsync(1);
+    }
+    ~WithAsyncMethod_ShipOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ShipOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::ShipOrderRequest* /*request*/, ::oteldemo::ShipOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestShipOrder(::grpc::ServerContext* context, ::oteldemo::ShipOrderRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::ShipOrderResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_GetQuote<WithAsyncMethod_ShipOrder<Service > > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_GetQuote : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_GetQuote() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::GetQuoteRequest, ::oteldemo::GetQuoteResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::GetQuoteRequest* request, ::oteldemo::GetQuoteResponse* response) { return this->GetQuote(context, request, response); }));}
+    void SetMessageAllocatorFor_GetQuote(
+        ::grpc::MessageAllocator< ::oteldemo::GetQuoteRequest, ::oteldemo::GetQuoteResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::GetQuoteRequest, ::oteldemo::GetQuoteResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_GetQuote() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetQuote(::grpc::ServerContext* /*context*/, const ::oteldemo::GetQuoteRequest* /*request*/, ::oteldemo::GetQuoteResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetQuote(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::GetQuoteRequest* /*request*/, ::oteldemo::GetQuoteResponse* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_ShipOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_ShipOrder() {
+      ::grpc::Service::MarkMethodCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::ShipOrderRequest, ::oteldemo::ShipOrderResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::ShipOrderRequest* request, ::oteldemo::ShipOrderResponse* response) { return this->ShipOrder(context, request, response); }));}
+    void SetMessageAllocatorFor_ShipOrder(
+        ::grpc::MessageAllocator< ::oteldemo::ShipOrderRequest, ::oteldemo::ShipOrderResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(1);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::ShipOrderRequest, ::oteldemo::ShipOrderResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_ShipOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ShipOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::ShipOrderRequest* /*request*/, ::oteldemo::ShipOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ShipOrder(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::ShipOrderRequest* /*request*/, ::oteldemo::ShipOrderResponse* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_GetQuote<WithCallbackMethod_ShipOrder<Service > > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_GetQuote : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_GetQuote() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_GetQuote() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetQuote(::grpc::ServerContext* /*context*/, const ::oteldemo::GetQuoteRequest* /*request*/, ::oteldemo::GetQuoteResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_ShipOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_ShipOrder() {
+      ::grpc::Service::MarkMethodGeneric(1);
+    }
+    ~WithGenericMethod_ShipOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ShipOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::ShipOrderRequest* /*request*/, ::oteldemo::ShipOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_GetQuote : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_GetQuote() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_GetQuote() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetQuote(::grpc::ServerContext* /*context*/, const ::oteldemo::GetQuoteRequest* /*request*/, ::oteldemo::GetQuoteResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetQuote(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_ShipOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_ShipOrder() {
+      ::grpc::Service::MarkMethodRaw(1);
+    }
+    ~WithRawMethod_ShipOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ShipOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::ShipOrderRequest* /*request*/, ::oteldemo::ShipOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestShipOrder(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_GetQuote : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_GetQuote() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->GetQuote(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_GetQuote() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetQuote(::grpc::ServerContext* /*context*/, const ::oteldemo::GetQuoteRequest* /*request*/, ::oteldemo::GetQuoteResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetQuote(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_ShipOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_ShipOrder() {
+      ::grpc::Service::MarkMethodRawCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->ShipOrder(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_ShipOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ShipOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::ShipOrderRequest* /*request*/, ::oteldemo::ShipOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ShipOrder(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_GetQuote : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_GetQuote() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::GetQuoteRequest, ::oteldemo::GetQuoteResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::GetQuoteRequest, ::oteldemo::GetQuoteResponse>* streamer) {
+                       return this->StreamedGetQuote(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_GetQuote() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status GetQuote(::grpc::ServerContext* /*context*/, const ::oteldemo::GetQuoteRequest* /*request*/, ::oteldemo::GetQuoteResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedGetQuote(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::GetQuoteRequest,::oteldemo::GetQuoteResponse>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_ShipOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_ShipOrder() {
+      ::grpc::Service::MarkMethodStreamed(1,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::ShipOrderRequest, ::oteldemo::ShipOrderResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::ShipOrderRequest, ::oteldemo::ShipOrderResponse>* streamer) {
+                       return this->StreamedShipOrder(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_ShipOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status ShipOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::ShipOrderRequest* /*request*/, ::oteldemo::ShipOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedShipOrder(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::ShipOrderRequest,::oteldemo::ShipOrderResponse>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_GetQuote<WithStreamedUnaryMethod_ShipOrder<Service > > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_GetQuote<WithStreamedUnaryMethod_ShipOrder<Service > > StreamedService;
+};
+
+// -----------------Currency service-----------------
+//
+class CurrencyService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.CurrencyService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status GetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::oteldemo::GetSupportedCurrenciesResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetSupportedCurrenciesResponse>> AsyncGetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetSupportedCurrenciesResponse>>(AsyncGetSupportedCurrenciesRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetSupportedCurrenciesResponse>> PrepareAsyncGetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetSupportedCurrenciesResponse>>(PrepareAsyncGetSupportedCurrenciesRaw(context, request, cq));
+    }
+    virtual ::grpc::Status Convert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::oteldemo::Money* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Money>> AsyncConvert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Money>>(AsyncConvertRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Money>> PrepareAsyncConvert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Money>>(PrepareAsyncConvertRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void GetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::GetSupportedCurrenciesResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void GetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::GetSupportedCurrenciesResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void Convert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest* request, ::oteldemo::Money* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void Convert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest* request, ::oteldemo::Money* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetSupportedCurrenciesResponse>* AsyncGetSupportedCurrenciesRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetSupportedCurrenciesResponse>* PrepareAsyncGetSupportedCurrenciesRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Money>* AsyncConvertRaw(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Money>* PrepareAsyncConvertRaw(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status GetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::oteldemo::GetSupportedCurrenciesResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetSupportedCurrenciesResponse>> AsyncGetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetSupportedCurrenciesResponse>>(AsyncGetSupportedCurrenciesRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetSupportedCurrenciesResponse>> PrepareAsyncGetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetSupportedCurrenciesResponse>>(PrepareAsyncGetSupportedCurrenciesRaw(context, request, cq));
+    }
+    ::grpc::Status Convert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::oteldemo::Money* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Money>> AsyncConvert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Money>>(AsyncConvertRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Money>> PrepareAsyncConvert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Money>>(PrepareAsyncConvertRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void GetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::GetSupportedCurrenciesResponse* response, std::function<void(::grpc::Status)>) override;
+      void GetSupportedCurrencies(::grpc::ClientContext* context, const ::oteldemo::Empty* request, ::oteldemo::GetSupportedCurrenciesResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void Convert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest* request, ::oteldemo::Money* response, std::function<void(::grpc::Status)>) override;
+      void Convert(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest* request, ::oteldemo::Money* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::GetSupportedCurrenciesResponse>* AsyncGetSupportedCurrenciesRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::GetSupportedCurrenciesResponse>* PrepareAsyncGetSupportedCurrenciesRaw(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Money>* AsyncConvertRaw(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Money>* PrepareAsyncConvertRaw(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_GetSupportedCurrencies_;
+    const ::grpc::internal::RpcMethod rpcmethod_Convert_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status GetSupportedCurrencies(::grpc::ServerContext* context, const ::oteldemo::Empty* request, ::oteldemo::GetSupportedCurrenciesResponse* response);
+    virtual ::grpc::Status Convert(::grpc::ServerContext* context, const ::oteldemo::CurrencyConversionRequest* request, ::oteldemo::Money* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_GetSupportedCurrencies : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_GetSupportedCurrencies() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_GetSupportedCurrencies() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetSupportedCurrencies(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::GetSupportedCurrenciesResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetSupportedCurrencies(::grpc::ServerContext* context, ::oteldemo::Empty* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::GetSupportedCurrenciesResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_Convert : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_Convert() {
+      ::grpc::Service::MarkMethodAsync(1);
+    }
+    ~WithAsyncMethod_Convert() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Convert(::grpc::ServerContext* /*context*/, const ::oteldemo::CurrencyConversionRequest* /*request*/, ::oteldemo::Money* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestConvert(::grpc::ServerContext* context, ::oteldemo::CurrencyConversionRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::Money>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_GetSupportedCurrencies<WithAsyncMethod_Convert<Service > > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_GetSupportedCurrencies : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_GetSupportedCurrencies() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::Empty, ::oteldemo::GetSupportedCurrenciesResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::Empty* request, ::oteldemo::GetSupportedCurrenciesResponse* response) { return this->GetSupportedCurrencies(context, request, response); }));}
+    void SetMessageAllocatorFor_GetSupportedCurrencies(
+        ::grpc::MessageAllocator< ::oteldemo::Empty, ::oteldemo::GetSupportedCurrenciesResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::Empty, ::oteldemo::GetSupportedCurrenciesResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_GetSupportedCurrencies() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetSupportedCurrencies(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::GetSupportedCurrenciesResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetSupportedCurrencies(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::GetSupportedCurrenciesResponse* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_Convert : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_Convert() {
+      ::grpc::Service::MarkMethodCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::CurrencyConversionRequest, ::oteldemo::Money>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::CurrencyConversionRequest* request, ::oteldemo::Money* response) { return this->Convert(context, request, response); }));}
+    void SetMessageAllocatorFor_Convert(
+        ::grpc::MessageAllocator< ::oteldemo::CurrencyConversionRequest, ::oteldemo::Money>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(1);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::CurrencyConversionRequest, ::oteldemo::Money>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_Convert() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Convert(::grpc::ServerContext* /*context*/, const ::oteldemo::CurrencyConversionRequest* /*request*/, ::oteldemo::Money* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* Convert(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::CurrencyConversionRequest* /*request*/, ::oteldemo::Money* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_GetSupportedCurrencies<WithCallbackMethod_Convert<Service > > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_GetSupportedCurrencies : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_GetSupportedCurrencies() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_GetSupportedCurrencies() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetSupportedCurrencies(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::GetSupportedCurrenciesResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_Convert : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_Convert() {
+      ::grpc::Service::MarkMethodGeneric(1);
+    }
+    ~WithGenericMethod_Convert() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Convert(::grpc::ServerContext* /*context*/, const ::oteldemo::CurrencyConversionRequest* /*request*/, ::oteldemo::Money* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_GetSupportedCurrencies : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_GetSupportedCurrencies() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_GetSupportedCurrencies() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetSupportedCurrencies(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::GetSupportedCurrenciesResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetSupportedCurrencies(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_Convert : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_Convert() {
+      ::grpc::Service::MarkMethodRaw(1);
+    }
+    ~WithRawMethod_Convert() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Convert(::grpc::ServerContext* /*context*/, const ::oteldemo::CurrencyConversionRequest* /*request*/, ::oteldemo::Money* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestConvert(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_GetSupportedCurrencies : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_GetSupportedCurrencies() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->GetSupportedCurrencies(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_GetSupportedCurrencies() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetSupportedCurrencies(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::GetSupportedCurrenciesResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetSupportedCurrencies(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_Convert : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_Convert() {
+      ::grpc::Service::MarkMethodRawCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->Convert(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_Convert() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Convert(::grpc::ServerContext* /*context*/, const ::oteldemo::CurrencyConversionRequest* /*request*/, ::oteldemo::Money* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* Convert(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_GetSupportedCurrencies : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_GetSupportedCurrencies() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::Empty, ::oteldemo::GetSupportedCurrenciesResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::Empty, ::oteldemo::GetSupportedCurrenciesResponse>* streamer) {
+                       return this->StreamedGetSupportedCurrencies(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_GetSupportedCurrencies() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status GetSupportedCurrencies(::grpc::ServerContext* /*context*/, const ::oteldemo::Empty* /*request*/, ::oteldemo::GetSupportedCurrenciesResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedGetSupportedCurrencies(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::Empty,::oteldemo::GetSupportedCurrenciesResponse>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_Convert : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_Convert() {
+      ::grpc::Service::MarkMethodStreamed(1,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::CurrencyConversionRequest, ::oteldemo::Money>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::CurrencyConversionRequest, ::oteldemo::Money>* streamer) {
+                       return this->StreamedConvert(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_Convert() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status Convert(::grpc::ServerContext* /*context*/, const ::oteldemo::CurrencyConversionRequest* /*request*/, ::oteldemo::Money* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedConvert(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::CurrencyConversionRequest,::oteldemo::Money>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_GetSupportedCurrencies<WithStreamedUnaryMethod_Convert<Service > > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_GetSupportedCurrencies<WithStreamedUnaryMethod_Convert<Service > > StreamedService;
+};
+
+// -------------Payment service-----------------
+//
+class PaymentService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.PaymentService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status Charge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::oteldemo::ChargeResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ChargeResponse>> AsyncCharge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ChargeResponse>>(AsyncChargeRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ChargeResponse>> PrepareAsyncCharge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ChargeResponse>>(PrepareAsyncChargeRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void Charge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest* request, ::oteldemo::ChargeResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void Charge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest* request, ::oteldemo::ChargeResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ChargeResponse>* AsyncChargeRaw(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ChargeResponse>* PrepareAsyncChargeRaw(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status Charge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::oteldemo::ChargeResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ChargeResponse>> AsyncCharge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ChargeResponse>>(AsyncChargeRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ChargeResponse>> PrepareAsyncCharge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ChargeResponse>>(PrepareAsyncChargeRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void Charge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest* request, ::oteldemo::ChargeResponse* response, std::function<void(::grpc::Status)>) override;
+      void Charge(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest* request, ::oteldemo::ChargeResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ChargeResponse>* AsyncChargeRaw(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ChargeResponse>* PrepareAsyncChargeRaw(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_Charge_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status Charge(::grpc::ServerContext* context, const ::oteldemo::ChargeRequest* request, ::oteldemo::ChargeResponse* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_Charge : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_Charge() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_Charge() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Charge(::grpc::ServerContext* /*context*/, const ::oteldemo::ChargeRequest* /*request*/, ::oteldemo::ChargeResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestCharge(::grpc::ServerContext* context, ::oteldemo::ChargeRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::ChargeResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_Charge<Service > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_Charge : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_Charge() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::ChargeRequest, ::oteldemo::ChargeResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::ChargeRequest* request, ::oteldemo::ChargeResponse* response) { return this->Charge(context, request, response); }));}
+    void SetMessageAllocatorFor_Charge(
+        ::grpc::MessageAllocator< ::oteldemo::ChargeRequest, ::oteldemo::ChargeResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::ChargeRequest, ::oteldemo::ChargeResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_Charge() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Charge(::grpc::ServerContext* /*context*/, const ::oteldemo::ChargeRequest* /*request*/, ::oteldemo::ChargeResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* Charge(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::ChargeRequest* /*request*/, ::oteldemo::ChargeResponse* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_Charge<Service > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_Charge : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_Charge() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_Charge() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Charge(::grpc::ServerContext* /*context*/, const ::oteldemo::ChargeRequest* /*request*/, ::oteldemo::ChargeResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_Charge : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_Charge() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_Charge() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Charge(::grpc::ServerContext* /*context*/, const ::oteldemo::ChargeRequest* /*request*/, ::oteldemo::ChargeResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestCharge(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_Charge : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_Charge() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->Charge(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_Charge() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Charge(::grpc::ServerContext* /*context*/, const ::oteldemo::ChargeRequest* /*request*/, ::oteldemo::ChargeResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* Charge(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_Charge : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_Charge() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::ChargeRequest, ::oteldemo::ChargeResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::ChargeRequest, ::oteldemo::ChargeResponse>* streamer) {
+                       return this->StreamedCharge(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_Charge() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status Charge(::grpc::ServerContext* /*context*/, const ::oteldemo::ChargeRequest* /*request*/, ::oteldemo::ChargeResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedCharge(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::ChargeRequest,::oteldemo::ChargeResponse>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_Charge<Service > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_Charge<Service > StreamedService;
+};
+
+// -------------Email service-----------------
+//
+class EmailService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.EmailService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status SendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::oteldemo::Empty* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>> AsyncSendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>>(AsyncSendOrderConfirmationRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>> PrepareAsyncSendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>>(PrepareAsyncSendOrderConfirmationRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void SendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest* request, ::oteldemo::Empty* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void SendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest* request, ::oteldemo::Empty* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>* AsyncSendOrderConfirmationRaw(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>* PrepareAsyncSendOrderConfirmationRaw(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status SendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::oteldemo::Empty* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>> AsyncSendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>>(AsyncSendOrderConfirmationRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>> PrepareAsyncSendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>>(PrepareAsyncSendOrderConfirmationRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void SendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest* request, ::oteldemo::Empty* response, std::function<void(::grpc::Status)>) override;
+      void SendOrderConfirmation(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest* request, ::oteldemo::Empty* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* AsyncSendOrderConfirmationRaw(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::Empty>* PrepareAsyncSendOrderConfirmationRaw(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_SendOrderConfirmation_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status SendOrderConfirmation(::grpc::ServerContext* context, const ::oteldemo::SendOrderConfirmationRequest* request, ::oteldemo::Empty* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_SendOrderConfirmation : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_SendOrderConfirmation() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_SendOrderConfirmation() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SendOrderConfirmation(::grpc::ServerContext* /*context*/, const ::oteldemo::SendOrderConfirmationRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestSendOrderConfirmation(::grpc::ServerContext* context, ::oteldemo::SendOrderConfirmationRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::Empty>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_SendOrderConfirmation<Service > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_SendOrderConfirmation : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_SendOrderConfirmation() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::SendOrderConfirmationRequest, ::oteldemo::Empty>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::SendOrderConfirmationRequest* request, ::oteldemo::Empty* response) { return this->SendOrderConfirmation(context, request, response); }));}
+    void SetMessageAllocatorFor_SendOrderConfirmation(
+        ::grpc::MessageAllocator< ::oteldemo::SendOrderConfirmationRequest, ::oteldemo::Empty>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::SendOrderConfirmationRequest, ::oteldemo::Empty>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_SendOrderConfirmation() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SendOrderConfirmation(::grpc::ServerContext* /*context*/, const ::oteldemo::SendOrderConfirmationRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* SendOrderConfirmation(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::SendOrderConfirmationRequest* /*request*/, ::oteldemo::Empty* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_SendOrderConfirmation<Service > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_SendOrderConfirmation : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_SendOrderConfirmation() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_SendOrderConfirmation() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SendOrderConfirmation(::grpc::ServerContext* /*context*/, const ::oteldemo::SendOrderConfirmationRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_SendOrderConfirmation : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_SendOrderConfirmation() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_SendOrderConfirmation() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SendOrderConfirmation(::grpc::ServerContext* /*context*/, const ::oteldemo::SendOrderConfirmationRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestSendOrderConfirmation(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_SendOrderConfirmation : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_SendOrderConfirmation() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->SendOrderConfirmation(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_SendOrderConfirmation() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status SendOrderConfirmation(::grpc::ServerContext* /*context*/, const ::oteldemo::SendOrderConfirmationRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* SendOrderConfirmation(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_SendOrderConfirmation : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_SendOrderConfirmation() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::SendOrderConfirmationRequest, ::oteldemo::Empty>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::SendOrderConfirmationRequest, ::oteldemo::Empty>* streamer) {
+                       return this->StreamedSendOrderConfirmation(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_SendOrderConfirmation() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status SendOrderConfirmation(::grpc::ServerContext* /*context*/, const ::oteldemo::SendOrderConfirmationRequest* /*request*/, ::oteldemo::Empty* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedSendOrderConfirmation(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::SendOrderConfirmationRequest,::oteldemo::Empty>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_SendOrderConfirmation<Service > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_SendOrderConfirmation<Service > StreamedService;
+};
+
+// -------------Checkout service-----------------
+//
+class CheckoutService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.CheckoutService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status PlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::oteldemo::PlaceOrderResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::PlaceOrderResponse>> AsyncPlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::PlaceOrderResponse>>(AsyncPlaceOrderRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::PlaceOrderResponse>> PrepareAsyncPlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::PlaceOrderResponse>>(PrepareAsyncPlaceOrderRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void PlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest* request, ::oteldemo::PlaceOrderResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void PlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest* request, ::oteldemo::PlaceOrderResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::PlaceOrderResponse>* AsyncPlaceOrderRaw(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::PlaceOrderResponse>* PrepareAsyncPlaceOrderRaw(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status PlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::oteldemo::PlaceOrderResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::PlaceOrderResponse>> AsyncPlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::PlaceOrderResponse>>(AsyncPlaceOrderRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::PlaceOrderResponse>> PrepareAsyncPlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::PlaceOrderResponse>>(PrepareAsyncPlaceOrderRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void PlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest* request, ::oteldemo::PlaceOrderResponse* response, std::function<void(::grpc::Status)>) override;
+      void PlaceOrder(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest* request, ::oteldemo::PlaceOrderResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::PlaceOrderResponse>* AsyncPlaceOrderRaw(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::PlaceOrderResponse>* PrepareAsyncPlaceOrderRaw(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_PlaceOrder_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status PlaceOrder(::grpc::ServerContext* context, const ::oteldemo::PlaceOrderRequest* request, ::oteldemo::PlaceOrderResponse* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_PlaceOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_PlaceOrder() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_PlaceOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status PlaceOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::PlaceOrderRequest* /*request*/, ::oteldemo::PlaceOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestPlaceOrder(::grpc::ServerContext* context, ::oteldemo::PlaceOrderRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::PlaceOrderResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_PlaceOrder<Service > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_PlaceOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_PlaceOrder() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::PlaceOrderRequest, ::oteldemo::PlaceOrderResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::PlaceOrderRequest* request, ::oteldemo::PlaceOrderResponse* response) { return this->PlaceOrder(context, request, response); }));}
+    void SetMessageAllocatorFor_PlaceOrder(
+        ::grpc::MessageAllocator< ::oteldemo::PlaceOrderRequest, ::oteldemo::PlaceOrderResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::PlaceOrderRequest, ::oteldemo::PlaceOrderResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_PlaceOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status PlaceOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::PlaceOrderRequest* /*request*/, ::oteldemo::PlaceOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* PlaceOrder(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::PlaceOrderRequest* /*request*/, ::oteldemo::PlaceOrderResponse* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_PlaceOrder<Service > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_PlaceOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_PlaceOrder() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_PlaceOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status PlaceOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::PlaceOrderRequest* /*request*/, ::oteldemo::PlaceOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_PlaceOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_PlaceOrder() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_PlaceOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status PlaceOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::PlaceOrderRequest* /*request*/, ::oteldemo::PlaceOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestPlaceOrder(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_PlaceOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_PlaceOrder() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->PlaceOrder(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_PlaceOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status PlaceOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::PlaceOrderRequest* /*request*/, ::oteldemo::PlaceOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* PlaceOrder(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_PlaceOrder : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_PlaceOrder() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::PlaceOrderRequest, ::oteldemo::PlaceOrderResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::PlaceOrderRequest, ::oteldemo::PlaceOrderResponse>* streamer) {
+                       return this->StreamedPlaceOrder(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_PlaceOrder() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status PlaceOrder(::grpc::ServerContext* /*context*/, const ::oteldemo::PlaceOrderRequest* /*request*/, ::oteldemo::PlaceOrderResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedPlaceOrder(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::PlaceOrderRequest,::oteldemo::PlaceOrderResponse>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_PlaceOrder<Service > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_PlaceOrder<Service > StreamedService;
+};
+
+// ------------Ad service------------------
+//
+class AdService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.AdService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status GetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::oteldemo::AdResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::AdResponse>> AsyncGetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::AdResponse>>(AsyncGetAdsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::AdResponse>> PrepareAsyncGetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::AdResponse>>(PrepareAsyncGetAdsRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void GetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest* request, ::oteldemo::AdResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void GetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest* request, ::oteldemo::AdResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::AdResponse>* AsyncGetAdsRaw(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::AdResponse>* PrepareAsyncGetAdsRaw(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status GetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::oteldemo::AdResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::AdResponse>> AsyncGetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::AdResponse>>(AsyncGetAdsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::AdResponse>> PrepareAsyncGetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::AdResponse>>(PrepareAsyncGetAdsRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void GetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest* request, ::oteldemo::AdResponse* response, std::function<void(::grpc::Status)>) override;
+      void GetAds(::grpc::ClientContext* context, const ::oteldemo::AdRequest* request, ::oteldemo::AdResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::AdResponse>* AsyncGetAdsRaw(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::AdResponse>* PrepareAsyncGetAdsRaw(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_GetAds_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status GetAds(::grpc::ServerContext* context, const ::oteldemo::AdRequest* request, ::oteldemo::AdResponse* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_GetAds : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_GetAds() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_GetAds() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetAds(::grpc::ServerContext* /*context*/, const ::oteldemo::AdRequest* /*request*/, ::oteldemo::AdResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetAds(::grpc::ServerContext* context, ::oteldemo::AdRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::AdResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_GetAds<Service > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_GetAds : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_GetAds() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::AdRequest, ::oteldemo::AdResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::AdRequest* request, ::oteldemo::AdResponse* response) { return this->GetAds(context, request, response); }));}
+    void SetMessageAllocatorFor_GetAds(
+        ::grpc::MessageAllocator< ::oteldemo::AdRequest, ::oteldemo::AdResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::AdRequest, ::oteldemo::AdResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_GetAds() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetAds(::grpc::ServerContext* /*context*/, const ::oteldemo::AdRequest* /*request*/, ::oteldemo::AdResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetAds(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::AdRequest* /*request*/, ::oteldemo::AdResponse* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_GetAds<Service > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_GetAds : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_GetAds() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_GetAds() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetAds(::grpc::ServerContext* /*context*/, const ::oteldemo::AdRequest* /*request*/, ::oteldemo::AdResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_GetAds : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_GetAds() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_GetAds() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetAds(::grpc::ServerContext* /*context*/, const ::oteldemo::AdRequest* /*request*/, ::oteldemo::AdResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetAds(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_GetAds : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_GetAds() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->GetAds(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_GetAds() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetAds(::grpc::ServerContext* /*context*/, const ::oteldemo::AdRequest* /*request*/, ::oteldemo::AdResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetAds(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_GetAds : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_GetAds() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::AdRequest, ::oteldemo::AdResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::AdRequest, ::oteldemo::AdResponse>* streamer) {
+                       return this->StreamedGetAds(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_GetAds() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status GetAds(::grpc::ServerContext* /*context*/, const ::oteldemo::AdRequest* /*request*/, ::oteldemo::AdResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedGetAds(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::AdRequest,::oteldemo::AdResponse>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_GetAds<Service > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_GetAds<Service > StreamedService;
+};
+
+// ------------Feature flag service------------------
+//
+class FeatureFlagService final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "oteldemo.FeatureFlagService";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status GetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::oteldemo::GetFlagResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetFlagResponse>> AsyncGetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetFlagResponse>>(AsyncGetFlagRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetFlagResponse>> PrepareAsyncGetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetFlagResponse>>(PrepareAsyncGetFlagRaw(context, request, cq));
+    }
+    virtual ::grpc::Status CreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::oteldemo::CreateFlagResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::CreateFlagResponse>> AsyncCreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::CreateFlagResponse>>(AsyncCreateFlagRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::CreateFlagResponse>> PrepareAsyncCreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::CreateFlagResponse>>(PrepareAsyncCreateFlagRaw(context, request, cq));
+    }
+    virtual ::grpc::Status UpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::oteldemo::UpdateFlagResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::UpdateFlagResponse>> AsyncUpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::UpdateFlagResponse>>(AsyncUpdateFlagRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::UpdateFlagResponse>> PrepareAsyncUpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::UpdateFlagResponse>>(PrepareAsyncUpdateFlagRaw(context, request, cq));
+    }
+    virtual ::grpc::Status ListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::oteldemo::ListFlagsResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListFlagsResponse>> AsyncListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListFlagsResponse>>(AsyncListFlagsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListFlagsResponse>> PrepareAsyncListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListFlagsResponse>>(PrepareAsyncListFlagsRaw(context, request, cq));
+    }
+    virtual ::grpc::Status DeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::oteldemo::DeleteFlagResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::DeleteFlagResponse>> AsyncDeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::DeleteFlagResponse>>(AsyncDeleteFlagRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::DeleteFlagResponse>> PrepareAsyncDeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::DeleteFlagResponse>>(PrepareAsyncDeleteFlagRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void GetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest* request, ::oteldemo::GetFlagResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void GetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest* request, ::oteldemo::GetFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void CreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest* request, ::oteldemo::CreateFlagResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void CreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest* request, ::oteldemo::CreateFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void UpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest* request, ::oteldemo::UpdateFlagResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void UpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest* request, ::oteldemo::UpdateFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void ListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest* request, ::oteldemo::ListFlagsResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void ListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest* request, ::oteldemo::ListFlagsResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+      virtual void DeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest* request, ::oteldemo::DeleteFlagResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void DeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest* request, ::oteldemo::DeleteFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetFlagResponse>* AsyncGetFlagRaw(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetFlagResponse>* PrepareAsyncGetFlagRaw(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::CreateFlagResponse>* AsyncCreateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::CreateFlagResponse>* PrepareAsyncCreateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::UpdateFlagResponse>* AsyncUpdateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::UpdateFlagResponse>* PrepareAsyncUpdateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListFlagsResponse>* AsyncListFlagsRaw(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListFlagsResponse>* PrepareAsyncListFlagsRaw(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::DeleteFlagResponse>* AsyncDeleteFlagRaw(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::DeleteFlagResponse>* PrepareAsyncDeleteFlagRaw(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status GetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::oteldemo::GetFlagResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetFlagResponse>> AsyncGetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetFlagResponse>>(AsyncGetFlagRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetFlagResponse>> PrepareAsyncGetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::GetFlagResponse>>(PrepareAsyncGetFlagRaw(context, request, cq));
+    }
+    ::grpc::Status CreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::oteldemo::CreateFlagResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::CreateFlagResponse>> AsyncCreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::CreateFlagResponse>>(AsyncCreateFlagRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::CreateFlagResponse>> PrepareAsyncCreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::CreateFlagResponse>>(PrepareAsyncCreateFlagRaw(context, request, cq));
+    }
+    ::grpc::Status UpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::oteldemo::UpdateFlagResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::UpdateFlagResponse>> AsyncUpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::UpdateFlagResponse>>(AsyncUpdateFlagRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::UpdateFlagResponse>> PrepareAsyncUpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::UpdateFlagResponse>>(PrepareAsyncUpdateFlagRaw(context, request, cq));
+    }
+    ::grpc::Status ListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::oteldemo::ListFlagsResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListFlagsResponse>> AsyncListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListFlagsResponse>>(AsyncListFlagsRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListFlagsResponse>> PrepareAsyncListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::ListFlagsResponse>>(PrepareAsyncListFlagsRaw(context, request, cq));
+    }
+    ::grpc::Status DeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::oteldemo::DeleteFlagResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::DeleteFlagResponse>> AsyncDeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::DeleteFlagResponse>>(AsyncDeleteFlagRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::DeleteFlagResponse>> PrepareAsyncDeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::oteldemo::DeleteFlagResponse>>(PrepareAsyncDeleteFlagRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void GetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest* request, ::oteldemo::GetFlagResponse* response, std::function<void(::grpc::Status)>) override;
+      void GetFlag(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest* request, ::oteldemo::GetFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void CreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest* request, ::oteldemo::CreateFlagResponse* response, std::function<void(::grpc::Status)>) override;
+      void CreateFlag(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest* request, ::oteldemo::CreateFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void UpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest* request, ::oteldemo::UpdateFlagResponse* response, std::function<void(::grpc::Status)>) override;
+      void UpdateFlag(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest* request, ::oteldemo::UpdateFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void ListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest* request, ::oteldemo::ListFlagsResponse* response, std::function<void(::grpc::Status)>) override;
+      void ListFlags(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest* request, ::oteldemo::ListFlagsResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+      void DeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest* request, ::oteldemo::DeleteFlagResponse* response, std::function<void(::grpc::Status)>) override;
+      void DeleteFlag(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest* request, ::oteldemo::DeleteFlagResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::GetFlagResponse>* AsyncGetFlagRaw(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::GetFlagResponse>* PrepareAsyncGetFlagRaw(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::CreateFlagResponse>* AsyncCreateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::CreateFlagResponse>* PrepareAsyncCreateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::UpdateFlagResponse>* AsyncUpdateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::UpdateFlagResponse>* PrepareAsyncUpdateFlagRaw(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ListFlagsResponse>* AsyncListFlagsRaw(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::ListFlagsResponse>* PrepareAsyncListFlagsRaw(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::DeleteFlagResponse>* AsyncDeleteFlagRaw(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::oteldemo::DeleteFlagResponse>* PrepareAsyncDeleteFlagRaw(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_GetFlag_;
+    const ::grpc::internal::RpcMethod rpcmethod_CreateFlag_;
+    const ::grpc::internal::RpcMethod rpcmethod_UpdateFlag_;
+    const ::grpc::internal::RpcMethod rpcmethod_ListFlags_;
+    const ::grpc::internal::RpcMethod rpcmethod_DeleteFlag_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status GetFlag(::grpc::ServerContext* context, const ::oteldemo::GetFlagRequest* request, ::oteldemo::GetFlagResponse* response);
+    virtual ::grpc::Status CreateFlag(::grpc::ServerContext* context, const ::oteldemo::CreateFlagRequest* request, ::oteldemo::CreateFlagResponse* response);
+    virtual ::grpc::Status UpdateFlag(::grpc::ServerContext* context, const ::oteldemo::UpdateFlagRequest* request, ::oteldemo::UpdateFlagResponse* response);
+    virtual ::grpc::Status ListFlags(::grpc::ServerContext* context, const ::oteldemo::ListFlagsRequest* request, ::oteldemo::ListFlagsResponse* response);
+    virtual ::grpc::Status DeleteFlag(::grpc::ServerContext* context, const ::oteldemo::DeleteFlagRequest* request, ::oteldemo::DeleteFlagResponse* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_GetFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_GetFlag() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_GetFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::GetFlagRequest* /*request*/, ::oteldemo::GetFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetFlag(::grpc::ServerContext* context, ::oteldemo::GetFlagRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::GetFlagResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_CreateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_CreateFlag() {
+      ::grpc::Service::MarkMethodAsync(1);
+    }
+    ~WithAsyncMethod_CreateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status CreateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::CreateFlagRequest* /*request*/, ::oteldemo::CreateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestCreateFlag(::grpc::ServerContext* context, ::oteldemo::CreateFlagRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::CreateFlagResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_UpdateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_UpdateFlag() {
+      ::grpc::Service::MarkMethodAsync(2);
+    }
+    ~WithAsyncMethod_UpdateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status UpdateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::UpdateFlagRequest* /*request*/, ::oteldemo::UpdateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestUpdateFlag(::grpc::ServerContext* context, ::oteldemo::UpdateFlagRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::UpdateFlagResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(2, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_ListFlags : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_ListFlags() {
+      ::grpc::Service::MarkMethodAsync(3);
+    }
+    ~WithAsyncMethod_ListFlags() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListFlags(::grpc::ServerContext* /*context*/, const ::oteldemo::ListFlagsRequest* /*request*/, ::oteldemo::ListFlagsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestListFlags(::grpc::ServerContext* context, ::oteldemo::ListFlagsRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::ListFlagsResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(3, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_DeleteFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_DeleteFlag() {
+      ::grpc::Service::MarkMethodAsync(4);
+    }
+    ~WithAsyncMethod_DeleteFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status DeleteFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::DeleteFlagRequest* /*request*/, ::oteldemo::DeleteFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestDeleteFlag(::grpc::ServerContext* context, ::oteldemo::DeleteFlagRequest* request, ::grpc::ServerAsyncResponseWriter< ::oteldemo::DeleteFlagResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(4, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_GetFlag<WithAsyncMethod_CreateFlag<WithAsyncMethod_UpdateFlag<WithAsyncMethod_ListFlags<WithAsyncMethod_DeleteFlag<Service > > > > > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_GetFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_GetFlag() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::GetFlagRequest, ::oteldemo::GetFlagResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::GetFlagRequest* request, ::oteldemo::GetFlagResponse* response) { return this->GetFlag(context, request, response); }));}
+    void SetMessageAllocatorFor_GetFlag(
+        ::grpc::MessageAllocator< ::oteldemo::GetFlagRequest, ::oteldemo::GetFlagResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::GetFlagRequest, ::oteldemo::GetFlagResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_GetFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::GetFlagRequest* /*request*/, ::oteldemo::GetFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetFlag(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::GetFlagRequest* /*request*/, ::oteldemo::GetFlagResponse* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_CreateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_CreateFlag() {
+      ::grpc::Service::MarkMethodCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::CreateFlagRequest, ::oteldemo::CreateFlagResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::CreateFlagRequest* request, ::oteldemo::CreateFlagResponse* response) { return this->CreateFlag(context, request, response); }));}
+    void SetMessageAllocatorFor_CreateFlag(
+        ::grpc::MessageAllocator< ::oteldemo::CreateFlagRequest, ::oteldemo::CreateFlagResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(1);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::CreateFlagRequest, ::oteldemo::CreateFlagResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_CreateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status CreateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::CreateFlagRequest* /*request*/, ::oteldemo::CreateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* CreateFlag(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::CreateFlagRequest* /*request*/, ::oteldemo::CreateFlagResponse* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_UpdateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_UpdateFlag() {
+      ::grpc::Service::MarkMethodCallback(2,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::UpdateFlagRequest, ::oteldemo::UpdateFlagResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::UpdateFlagRequest* request, ::oteldemo::UpdateFlagResponse* response) { return this->UpdateFlag(context, request, response); }));}
+    void SetMessageAllocatorFor_UpdateFlag(
+        ::grpc::MessageAllocator< ::oteldemo::UpdateFlagRequest, ::oteldemo::UpdateFlagResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(2);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::UpdateFlagRequest, ::oteldemo::UpdateFlagResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_UpdateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status UpdateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::UpdateFlagRequest* /*request*/, ::oteldemo::UpdateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* UpdateFlag(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::UpdateFlagRequest* /*request*/, ::oteldemo::UpdateFlagResponse* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_ListFlags : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_ListFlags() {
+      ::grpc::Service::MarkMethodCallback(3,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::ListFlagsRequest, ::oteldemo::ListFlagsResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::ListFlagsRequest* request, ::oteldemo::ListFlagsResponse* response) { return this->ListFlags(context, request, response); }));}
+    void SetMessageAllocatorFor_ListFlags(
+        ::grpc::MessageAllocator< ::oteldemo::ListFlagsRequest, ::oteldemo::ListFlagsResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(3);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::ListFlagsRequest, ::oteldemo::ListFlagsResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_ListFlags() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListFlags(::grpc::ServerContext* /*context*/, const ::oteldemo::ListFlagsRequest* /*request*/, ::oteldemo::ListFlagsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ListFlags(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::ListFlagsRequest* /*request*/, ::oteldemo::ListFlagsResponse* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithCallbackMethod_DeleteFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_DeleteFlag() {
+      ::grpc::Service::MarkMethodCallback(4,
+          new ::grpc::internal::CallbackUnaryHandler< ::oteldemo::DeleteFlagRequest, ::oteldemo::DeleteFlagResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::oteldemo::DeleteFlagRequest* request, ::oteldemo::DeleteFlagResponse* response) { return this->DeleteFlag(context, request, response); }));}
+    void SetMessageAllocatorFor_DeleteFlag(
+        ::grpc::MessageAllocator< ::oteldemo::DeleteFlagRequest, ::oteldemo::DeleteFlagResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(4);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::oteldemo::DeleteFlagRequest, ::oteldemo::DeleteFlagResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_DeleteFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status DeleteFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::DeleteFlagRequest* /*request*/, ::oteldemo::DeleteFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* DeleteFlag(
+      ::grpc::CallbackServerContext* /*context*/, const ::oteldemo::DeleteFlagRequest* /*request*/, ::oteldemo::DeleteFlagResponse* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_GetFlag<WithCallbackMethod_CreateFlag<WithCallbackMethod_UpdateFlag<WithCallbackMethod_ListFlags<WithCallbackMethod_DeleteFlag<Service > > > > > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_GetFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_GetFlag() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_GetFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::GetFlagRequest* /*request*/, ::oteldemo::GetFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_CreateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_CreateFlag() {
+      ::grpc::Service::MarkMethodGeneric(1);
+    }
+    ~WithGenericMethod_CreateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status CreateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::CreateFlagRequest* /*request*/, ::oteldemo::CreateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_UpdateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_UpdateFlag() {
+      ::grpc::Service::MarkMethodGeneric(2);
+    }
+    ~WithGenericMethod_UpdateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status UpdateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::UpdateFlagRequest* /*request*/, ::oteldemo::UpdateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_ListFlags : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_ListFlags() {
+      ::grpc::Service::MarkMethodGeneric(3);
+    }
+    ~WithGenericMethod_ListFlags() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListFlags(::grpc::ServerContext* /*context*/, const ::oteldemo::ListFlagsRequest* /*request*/, ::oteldemo::ListFlagsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithGenericMethod_DeleteFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_DeleteFlag() {
+      ::grpc::Service::MarkMethodGeneric(4);
+    }
+    ~WithGenericMethod_DeleteFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status DeleteFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::DeleteFlagRequest* /*request*/, ::oteldemo::DeleteFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_GetFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_GetFlag() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_GetFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::GetFlagRequest* /*request*/, ::oteldemo::GetFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestGetFlag(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_CreateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_CreateFlag() {
+      ::grpc::Service::MarkMethodRaw(1);
+    }
+    ~WithRawMethod_CreateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status CreateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::CreateFlagRequest* /*request*/, ::oteldemo::CreateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestCreateFlag(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(1, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_UpdateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_UpdateFlag() {
+      ::grpc::Service::MarkMethodRaw(2);
+    }
+    ~WithRawMethod_UpdateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status UpdateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::UpdateFlagRequest* /*request*/, ::oteldemo::UpdateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestUpdateFlag(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(2, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_ListFlags : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_ListFlags() {
+      ::grpc::Service::MarkMethodRaw(3);
+    }
+    ~WithRawMethod_ListFlags() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListFlags(::grpc::ServerContext* /*context*/, const ::oteldemo::ListFlagsRequest* /*request*/, ::oteldemo::ListFlagsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestListFlags(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(3, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_DeleteFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_DeleteFlag() {
+      ::grpc::Service::MarkMethodRaw(4);
+    }
+    ~WithRawMethod_DeleteFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status DeleteFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::DeleteFlagRequest* /*request*/, ::oteldemo::DeleteFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestDeleteFlag(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(4, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_GetFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_GetFlag() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->GetFlag(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_GetFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status GetFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::GetFlagRequest* /*request*/, ::oteldemo::GetFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* GetFlag(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_CreateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_CreateFlag() {
+      ::grpc::Service::MarkMethodRawCallback(1,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->CreateFlag(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_CreateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status CreateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::CreateFlagRequest* /*request*/, ::oteldemo::CreateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* CreateFlag(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_UpdateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_UpdateFlag() {
+      ::grpc::Service::MarkMethodRawCallback(2,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->UpdateFlag(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_UpdateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status UpdateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::UpdateFlagRequest* /*request*/, ::oteldemo::UpdateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* UpdateFlag(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_ListFlags : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_ListFlags() {
+      ::grpc::Service::MarkMethodRawCallback(3,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->ListFlags(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_ListFlags() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status ListFlags(::grpc::ServerContext* /*context*/, const ::oteldemo::ListFlagsRequest* /*request*/, ::oteldemo::ListFlagsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* ListFlags(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_DeleteFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_DeleteFlag() {
+      ::grpc::Service::MarkMethodRawCallback(4,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->DeleteFlag(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_DeleteFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status DeleteFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::DeleteFlagRequest* /*request*/, ::oteldemo::DeleteFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* DeleteFlag(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_GetFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_GetFlag() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::GetFlagRequest, ::oteldemo::GetFlagResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::GetFlagRequest, ::oteldemo::GetFlagResponse>* streamer) {
+                       return this->StreamedGetFlag(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_GetFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status GetFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::GetFlagRequest* /*request*/, ::oteldemo::GetFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedGetFlag(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::GetFlagRequest,::oteldemo::GetFlagResponse>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_CreateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_CreateFlag() {
+      ::grpc::Service::MarkMethodStreamed(1,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::CreateFlagRequest, ::oteldemo::CreateFlagResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::CreateFlagRequest, ::oteldemo::CreateFlagResponse>* streamer) {
+                       return this->StreamedCreateFlag(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_CreateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status CreateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::CreateFlagRequest* /*request*/, ::oteldemo::CreateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedCreateFlag(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::CreateFlagRequest,::oteldemo::CreateFlagResponse>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_UpdateFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_UpdateFlag() {
+      ::grpc::Service::MarkMethodStreamed(2,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::UpdateFlagRequest, ::oteldemo::UpdateFlagResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::UpdateFlagRequest, ::oteldemo::UpdateFlagResponse>* streamer) {
+                       return this->StreamedUpdateFlag(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_UpdateFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status UpdateFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::UpdateFlagRequest* /*request*/, ::oteldemo::UpdateFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedUpdateFlag(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::UpdateFlagRequest,::oteldemo::UpdateFlagResponse>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_ListFlags : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_ListFlags() {
+      ::grpc::Service::MarkMethodStreamed(3,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::ListFlagsRequest, ::oteldemo::ListFlagsResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::ListFlagsRequest, ::oteldemo::ListFlagsResponse>* streamer) {
+                       return this->StreamedListFlags(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_ListFlags() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status ListFlags(::grpc::ServerContext* /*context*/, const ::oteldemo::ListFlagsRequest* /*request*/, ::oteldemo::ListFlagsResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedListFlags(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::ListFlagsRequest,::oteldemo::ListFlagsResponse>* server_unary_streamer) = 0;
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_DeleteFlag : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_DeleteFlag() {
+      ::grpc::Service::MarkMethodStreamed(4,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::oteldemo::DeleteFlagRequest, ::oteldemo::DeleteFlagResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::oteldemo::DeleteFlagRequest, ::oteldemo::DeleteFlagResponse>* streamer) {
+                       return this->StreamedDeleteFlag(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_DeleteFlag() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status DeleteFlag(::grpc::ServerContext* /*context*/, const ::oteldemo::DeleteFlagRequest* /*request*/, ::oteldemo::DeleteFlagResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedDeleteFlag(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::oteldemo::DeleteFlagRequest,::oteldemo::DeleteFlagResponse>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_GetFlag<WithStreamedUnaryMethod_CreateFlag<WithStreamedUnaryMethod_UpdateFlag<WithStreamedUnaryMethod_ListFlags<WithStreamedUnaryMethod_DeleteFlag<Service > > > > > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_GetFlag<WithStreamedUnaryMethod_CreateFlag<WithStreamedUnaryMethod_UpdateFlag<WithStreamedUnaryMethod_ListFlags<WithStreamedUnaryMethod_DeleteFlag<Service > > > > > StreamedService;
+};
+
+}  // namespace oteldemo
+
+
+#endif  // GRPC_demo_2eproto__INCLUDED
diff --git a/src/currency/build/generated/proto/demo.pb.cc b/src/currency/build/generated/proto/demo.pb.cc
new file mode 100644
index 0000000..3d81620
--- /dev/null
+++ b/src/currency/build/generated/proto/demo.pb.cc
@@ -0,0 +1,10594 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: demo.proto
+
+#include "demo.pb.h"
+
+#include <algorithm>
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/extension_set.h"
+#include "google/protobuf/wire_format_lite.h"
+#include "google/protobuf/descriptor.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/reflection_ops.h"
+#include "google/protobuf/wire_format.h"
+#include "google/protobuf/generated_message_tctable_impl.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+PROTOBUF_PRAGMA_INIT_SEG
+namespace _pb = ::google::protobuf;
+namespace _pbi = ::google::protobuf::internal;
+namespace _fl = ::google::protobuf::internal::field_layout;
+namespace oteldemo {
+        template <typename>
+PROTOBUF_CONSTEXPR CartItem::CartItem(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.product_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.quantity_)*/ 0,
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct CartItemDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR CartItemDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~CartItemDefaultTypeInternal() {}
+  union {
+    CartItem _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CartItemDefaultTypeInternal _CartItem_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR AddItemRequest::AddItemRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.user_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.item_)*/ nullptr,
+    } {}
+struct AddItemRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR AddItemRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~AddItemRequestDefaultTypeInternal() {}
+  union {
+    AddItemRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 AddItemRequestDefaultTypeInternal _AddItemRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR EmptyCartRequest::EmptyCartRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.user_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct EmptyCartRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR EmptyCartRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~EmptyCartRequestDefaultTypeInternal() {}
+  union {
+    EmptyCartRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 EmptyCartRequestDefaultTypeInternal _EmptyCartRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR GetCartRequest::GetCartRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.user_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct GetCartRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR GetCartRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~GetCartRequestDefaultTypeInternal() {}
+  union {
+    GetCartRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 GetCartRequestDefaultTypeInternal _GetCartRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR Cart::Cart(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.items_)*/ {},
+      /*decltype(_impl_.user_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct CartDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR CartDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~CartDefaultTypeInternal() {}
+  union {
+    Cart _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CartDefaultTypeInternal _Cart_default_instance_;
+      template <typename>
+PROTOBUF_CONSTEXPR Empty::Empty(::_pbi::ConstantInitialized) {}
+struct EmptyDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR EmptyDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~EmptyDefaultTypeInternal() {}
+  union {
+    Empty _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 EmptyDefaultTypeInternal _Empty_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR ListRecommendationsRequest::ListRecommendationsRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.product_ids_)*/ {},
+      /*decltype(_impl_.user_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct ListRecommendationsRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ListRecommendationsRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ListRecommendationsRequestDefaultTypeInternal() {}
+  union {
+    ListRecommendationsRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ListRecommendationsRequestDefaultTypeInternal _ListRecommendationsRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR ListRecommendationsResponse::ListRecommendationsResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.product_ids_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct ListRecommendationsResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ListRecommendationsResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ListRecommendationsResponseDefaultTypeInternal() {}
+  union {
+    ListRecommendationsResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ListRecommendationsResponseDefaultTypeInternal _ListRecommendationsResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR Product::Product(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.categories_)*/ {},
+      /*decltype(_impl_.id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.name_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.description_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.picture_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.price_usd_)*/ nullptr,
+    } {}
+struct ProductDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ProductDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ProductDefaultTypeInternal() {}
+  union {
+    Product _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ProductDefaultTypeInternal _Product_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR ListProductsResponse::ListProductsResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.products_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct ListProductsResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ListProductsResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ListProductsResponseDefaultTypeInternal() {}
+  union {
+    ListProductsResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ListProductsResponseDefaultTypeInternal _ListProductsResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR GetProductRequest::GetProductRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct GetProductRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR GetProductRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~GetProductRequestDefaultTypeInternal() {}
+  union {
+    GetProductRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 GetProductRequestDefaultTypeInternal _GetProductRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR SearchProductsRequest::SearchProductsRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.query_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct SearchProductsRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR SearchProductsRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~SearchProductsRequestDefaultTypeInternal() {}
+  union {
+    SearchProductsRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 SearchProductsRequestDefaultTypeInternal _SearchProductsRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR SearchProductsResponse::SearchProductsResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.results_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct SearchProductsResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR SearchProductsResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~SearchProductsResponseDefaultTypeInternal() {}
+  union {
+    SearchProductsResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 SearchProductsResponseDefaultTypeInternal _SearchProductsResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR GetQuoteRequest::GetQuoteRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.items_)*/ {},
+      /*decltype(_impl_.address_)*/ nullptr,
+    } {}
+struct GetQuoteRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR GetQuoteRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~GetQuoteRequestDefaultTypeInternal() {}
+  union {
+    GetQuoteRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 GetQuoteRequestDefaultTypeInternal _GetQuoteRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR GetQuoteResponse::GetQuoteResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.cost_usd_)*/ nullptr,
+    } {}
+struct GetQuoteResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR GetQuoteResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~GetQuoteResponseDefaultTypeInternal() {}
+  union {
+    GetQuoteResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 GetQuoteResponseDefaultTypeInternal _GetQuoteResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR ShipOrderRequest::ShipOrderRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.items_)*/ {},
+      /*decltype(_impl_.address_)*/ nullptr,
+    } {}
+struct ShipOrderRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ShipOrderRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ShipOrderRequestDefaultTypeInternal() {}
+  union {
+    ShipOrderRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ShipOrderRequestDefaultTypeInternal _ShipOrderRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR ShipOrderResponse::ShipOrderResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.tracking_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct ShipOrderResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ShipOrderResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ShipOrderResponseDefaultTypeInternal() {}
+  union {
+    ShipOrderResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ShipOrderResponseDefaultTypeInternal _ShipOrderResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR Address::Address(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.street_address_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.city_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.state_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.country_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.zip_code_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct AddressDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR AddressDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~AddressDefaultTypeInternal() {}
+  union {
+    Address _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 AddressDefaultTypeInternal _Address_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR Money::Money(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.currency_code_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.units_)*/ ::int64_t{0},
+      /*decltype(_impl_.nanos_)*/ 0,
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct MoneyDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR MoneyDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~MoneyDefaultTypeInternal() {}
+  union {
+    Money _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 MoneyDefaultTypeInternal _Money_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR GetSupportedCurrenciesResponse::GetSupportedCurrenciesResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.currency_codes_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct GetSupportedCurrenciesResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR GetSupportedCurrenciesResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~GetSupportedCurrenciesResponseDefaultTypeInternal() {}
+  union {
+    GetSupportedCurrenciesResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 GetSupportedCurrenciesResponseDefaultTypeInternal _GetSupportedCurrenciesResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR CurrencyConversionRequest::CurrencyConversionRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.to_code_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.from_)*/ nullptr,
+    } {}
+struct CurrencyConversionRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR CurrencyConversionRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~CurrencyConversionRequestDefaultTypeInternal() {}
+  union {
+    CurrencyConversionRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CurrencyConversionRequestDefaultTypeInternal _CurrencyConversionRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR CreditCardInfo::CreditCardInfo(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.credit_card_number_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.credit_card_cvv_)*/ 0,
+      /*decltype(_impl_.credit_card_expiration_year_)*/ 0,
+      /*decltype(_impl_.credit_card_expiration_month_)*/ 0,
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct CreditCardInfoDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR CreditCardInfoDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~CreditCardInfoDefaultTypeInternal() {}
+  union {
+    CreditCardInfo _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreditCardInfoDefaultTypeInternal _CreditCardInfo_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR ChargeRequest::ChargeRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.amount_)*/ nullptr,
+      /*decltype(_impl_.credit_card_)*/ nullptr,
+    } {}
+struct ChargeRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ChargeRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ChargeRequestDefaultTypeInternal() {}
+  union {
+    ChargeRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ChargeRequestDefaultTypeInternal _ChargeRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR ChargeResponse::ChargeResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.transaction_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct ChargeResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ChargeResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ChargeResponseDefaultTypeInternal() {}
+  union {
+    ChargeResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ChargeResponseDefaultTypeInternal _ChargeResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR OrderItem::OrderItem(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.item_)*/ nullptr,
+      /*decltype(_impl_.cost_)*/ nullptr,
+    } {}
+struct OrderItemDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR OrderItemDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~OrderItemDefaultTypeInternal() {}
+  union {
+    OrderItem _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 OrderItemDefaultTypeInternal _OrderItem_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR OrderResult::OrderResult(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.items_)*/ {},
+      /*decltype(_impl_.order_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.shipping_tracking_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.shipping_cost_)*/ nullptr,
+      /*decltype(_impl_.shipping_address_)*/ nullptr,
+    } {}
+struct OrderResultDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR OrderResultDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~OrderResultDefaultTypeInternal() {}
+  union {
+    OrderResult _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 OrderResultDefaultTypeInternal _OrderResult_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR SendOrderConfirmationRequest::SendOrderConfirmationRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.email_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.order_)*/ nullptr,
+    } {}
+struct SendOrderConfirmationRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR SendOrderConfirmationRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~SendOrderConfirmationRequestDefaultTypeInternal() {}
+  union {
+    SendOrderConfirmationRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 SendOrderConfirmationRequestDefaultTypeInternal _SendOrderConfirmationRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR PlaceOrderRequest::PlaceOrderRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.user_id_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.user_currency_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.email_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.address_)*/ nullptr,
+      /*decltype(_impl_.credit_card_)*/ nullptr,
+    } {}
+struct PlaceOrderRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR PlaceOrderRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~PlaceOrderRequestDefaultTypeInternal() {}
+  union {
+    PlaceOrderRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 PlaceOrderRequestDefaultTypeInternal _PlaceOrderRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR PlaceOrderResponse::PlaceOrderResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.order_)*/ nullptr,
+    } {}
+struct PlaceOrderResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR PlaceOrderResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~PlaceOrderResponseDefaultTypeInternal() {}
+  union {
+    PlaceOrderResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 PlaceOrderResponseDefaultTypeInternal _PlaceOrderResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR AdRequest::AdRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.context_keys_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct AdRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR AdRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~AdRequestDefaultTypeInternal() {}
+  union {
+    AdRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 AdRequestDefaultTypeInternal _AdRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR AdResponse::AdResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.ads_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct AdResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR AdResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~AdResponseDefaultTypeInternal() {}
+  union {
+    AdResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 AdResponseDefaultTypeInternal _AdResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR Ad::Ad(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.redirect_url_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.text_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct AdDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR AdDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~AdDefaultTypeInternal() {}
+  union {
+    Ad _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 AdDefaultTypeInternal _Ad_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR Flag::Flag(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.name_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.description_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.enabled_)*/ false,
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct FlagDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR FlagDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~FlagDefaultTypeInternal() {}
+  union {
+    Flag _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 FlagDefaultTypeInternal _Flag_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR GetFlagRequest::GetFlagRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.name_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct GetFlagRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR GetFlagRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~GetFlagRequestDefaultTypeInternal() {}
+  union {
+    GetFlagRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 GetFlagRequestDefaultTypeInternal _GetFlagRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR GetFlagResponse::GetFlagResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.flag_)*/ nullptr,
+    } {}
+struct GetFlagResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR GetFlagResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~GetFlagResponseDefaultTypeInternal() {}
+  union {
+    GetFlagResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 GetFlagResponseDefaultTypeInternal _GetFlagResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR CreateFlagRequest::CreateFlagRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.name_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.description_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.enabled_)*/ false,
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct CreateFlagRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR CreateFlagRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~CreateFlagRequestDefaultTypeInternal() {}
+  union {
+    CreateFlagRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateFlagRequestDefaultTypeInternal _CreateFlagRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR CreateFlagResponse::CreateFlagResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_._has_bits_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+      /*decltype(_impl_.flag_)*/ nullptr,
+    } {}
+struct CreateFlagResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR CreateFlagResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~CreateFlagResponseDefaultTypeInternal() {}
+  union {
+    CreateFlagResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateFlagResponseDefaultTypeInternal _CreateFlagResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR UpdateFlagRequest::UpdateFlagRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.name_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_.enabled_)*/ false,
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct UpdateFlagRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR UpdateFlagRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~UpdateFlagRequestDefaultTypeInternal() {}
+  union {
+    UpdateFlagRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 UpdateFlagRequestDefaultTypeInternal _UpdateFlagRequest_default_instance_;
+      template <typename>
+PROTOBUF_CONSTEXPR UpdateFlagResponse::UpdateFlagResponse(::_pbi::ConstantInitialized) {}
+struct UpdateFlagResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR UpdateFlagResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~UpdateFlagResponseDefaultTypeInternal() {}
+  union {
+    UpdateFlagResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 UpdateFlagResponseDefaultTypeInternal _UpdateFlagResponse_default_instance_;
+      template <typename>
+PROTOBUF_CONSTEXPR ListFlagsRequest::ListFlagsRequest(::_pbi::ConstantInitialized) {}
+struct ListFlagsRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ListFlagsRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ListFlagsRequestDefaultTypeInternal() {}
+  union {
+    ListFlagsRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ListFlagsRequestDefaultTypeInternal _ListFlagsRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR ListFlagsResponse::ListFlagsResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.flag_)*/ {},
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct ListFlagsResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ListFlagsResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ListFlagsResponseDefaultTypeInternal() {}
+  union {
+    ListFlagsResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ListFlagsResponseDefaultTypeInternal _ListFlagsResponse_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR DeleteFlagRequest::DeleteFlagRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.name_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct DeleteFlagRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR DeleteFlagRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~DeleteFlagRequestDefaultTypeInternal() {}
+  union {
+    DeleteFlagRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DeleteFlagRequestDefaultTypeInternal _DeleteFlagRequest_default_instance_;
+      template <typename>
+PROTOBUF_CONSTEXPR DeleteFlagResponse::DeleteFlagResponse(::_pbi::ConstantInitialized) {}
+struct DeleteFlagResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR DeleteFlagResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~DeleteFlagResponseDefaultTypeInternal() {}
+  union {
+    DeleteFlagResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DeleteFlagResponseDefaultTypeInternal _DeleteFlagResponse_default_instance_;
+}  // namespace oteldemo
+static ::_pb::Metadata file_level_metadata_demo_2eproto[43];
+static constexpr const ::_pb::EnumDescriptor**
+    file_level_enum_descriptors_demo_2eproto = nullptr;
+static constexpr const ::_pb::ServiceDescriptor**
+    file_level_service_descriptors_demo_2eproto = nullptr;
+const ::uint32_t TableStruct_demo_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(
+    protodesc_cold) = {
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CartItem, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CartItem, _impl_.product_id_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CartItem, _impl_.quantity_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::AddItemRequest, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::AddItemRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::AddItemRequest, _impl_.user_id_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::AddItemRequest, _impl_.item_),
+    ~0u,
+    0,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::EmptyCartRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::EmptyCartRequest, _impl_.user_id_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetCartRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetCartRequest, _impl_.user_id_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Cart, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Cart, _impl_.user_id_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Cart, _impl_.items_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Empty, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListRecommendationsRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListRecommendationsRequest, _impl_.user_id_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListRecommendationsRequest, _impl_.product_ids_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListRecommendationsResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListRecommendationsResponse, _impl_.product_ids_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Product, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Product, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Product, _impl_.id_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Product, _impl_.name_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Product, _impl_.description_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Product, _impl_.picture_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Product, _impl_.price_usd_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Product, _impl_.categories_),
+    ~0u,
+    ~0u,
+    ~0u,
+    ~0u,
+    0,
+    ~0u,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListProductsResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListProductsResponse, _impl_.products_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetProductRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetProductRequest, _impl_.id_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::SearchProductsRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::SearchProductsRequest, _impl_.query_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::SearchProductsResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::SearchProductsResponse, _impl_.results_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetQuoteRequest, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetQuoteRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetQuoteRequest, _impl_.address_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetQuoteRequest, _impl_.items_),
+    0,
+    ~0u,
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetQuoteResponse, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetQuoteResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetQuoteResponse, _impl_.cost_usd_),
+    0,
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ShipOrderRequest, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ShipOrderRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ShipOrderRequest, _impl_.address_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ShipOrderRequest, _impl_.items_),
+    0,
+    ~0u,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ShipOrderResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ShipOrderResponse, _impl_.tracking_id_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Address, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Address, _impl_.street_address_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Address, _impl_.city_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Address, _impl_.state_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Address, _impl_.country_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Address, _impl_.zip_code_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Money, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Money, _impl_.currency_code_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Money, _impl_.units_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Money, _impl_.nanos_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetSupportedCurrenciesResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetSupportedCurrenciesResponse, _impl_.currency_codes_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CurrencyConversionRequest, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CurrencyConversionRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CurrencyConversionRequest, _impl_.from_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CurrencyConversionRequest, _impl_.to_code_),
+    0,
+    ~0u,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreditCardInfo, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreditCardInfo, _impl_.credit_card_number_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreditCardInfo, _impl_.credit_card_cvv_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreditCardInfo, _impl_.credit_card_expiration_year_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreditCardInfo, _impl_.credit_card_expiration_month_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ChargeRequest, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ChargeRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ChargeRequest, _impl_.amount_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ChargeRequest, _impl_.credit_card_),
+    0,
+    1,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ChargeResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ChargeResponse, _impl_.transaction_id_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderItem, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderItem, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderItem, _impl_.item_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderItem, _impl_.cost_),
+    0,
+    1,
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderResult, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderResult, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderResult, _impl_.order_id_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderResult, _impl_.shipping_tracking_id_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderResult, _impl_.shipping_cost_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderResult, _impl_.shipping_address_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::OrderResult, _impl_.items_),
+    ~0u,
+    ~0u,
+    0,
+    1,
+    ~0u,
+    PROTOBUF_FIELD_OFFSET(::oteldemo::SendOrderConfirmationRequest, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::SendOrderConfirmationRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::SendOrderConfirmationRequest, _impl_.email_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::SendOrderConfirmationRequest, _impl_.order_),
+    ~0u,
+    0,
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderRequest, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderRequest, _impl_.user_id_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderRequest, _impl_.user_currency_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderRequest, _impl_.address_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderRequest, _impl_.email_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderRequest, _impl_.credit_card_),
+    ~0u,
+    ~0u,
+    0,
+    ~0u,
+    1,
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderResponse, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::PlaceOrderResponse, _impl_.order_),
+    0,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::AdRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::AdRequest, _impl_.context_keys_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::AdResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::AdResponse, _impl_.ads_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Ad, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Ad, _impl_.redirect_url_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Ad, _impl_.text_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Flag, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Flag, _impl_.name_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Flag, _impl_.description_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::Flag, _impl_.enabled_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetFlagRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetFlagRequest, _impl_.name_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetFlagResponse, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetFlagResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::GetFlagResponse, _impl_.flag_),
+    0,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreateFlagRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreateFlagRequest, _impl_.name_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreateFlagRequest, _impl_.description_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreateFlagRequest, _impl_.enabled_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreateFlagResponse, _impl_._has_bits_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreateFlagResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::CreateFlagResponse, _impl_.flag_),
+    0,
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::UpdateFlagRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::UpdateFlagRequest, _impl_.name_),
+    PROTOBUF_FIELD_OFFSET(::oteldemo::UpdateFlagRequest, _impl_.enabled_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::UpdateFlagResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListFlagsRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListFlagsResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::ListFlagsResponse, _impl_.flag_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::DeleteFlagRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::oteldemo::DeleteFlagRequest, _impl_.name_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::oteldemo::DeleteFlagResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+};
+
+static const ::_pbi::MigrationSchema
+    schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+        {0, -1, -1, sizeof(::oteldemo::CartItem)},
+        {10, 20, -1, sizeof(::oteldemo::AddItemRequest)},
+        {22, -1, -1, sizeof(::oteldemo::EmptyCartRequest)},
+        {31, -1, -1, sizeof(::oteldemo::GetCartRequest)},
+        {40, -1, -1, sizeof(::oteldemo::Cart)},
+        {50, -1, -1, sizeof(::oteldemo::Empty)},
+        {58, -1, -1, sizeof(::oteldemo::ListRecommendationsRequest)},
+        {68, -1, -1, sizeof(::oteldemo::ListRecommendationsResponse)},
+        {77, 91, -1, sizeof(::oteldemo::Product)},
+        {97, -1, -1, sizeof(::oteldemo::ListProductsResponse)},
+        {106, -1, -1, sizeof(::oteldemo::GetProductRequest)},
+        {115, -1, -1, sizeof(::oteldemo::SearchProductsRequest)},
+        {124, -1, -1, sizeof(::oteldemo::SearchProductsResponse)},
+        {133, 143, -1, sizeof(::oteldemo::GetQuoteRequest)},
+        {145, 154, -1, sizeof(::oteldemo::GetQuoteResponse)},
+        {155, 165, -1, sizeof(::oteldemo::ShipOrderRequest)},
+        {167, -1, -1, sizeof(::oteldemo::ShipOrderResponse)},
+        {176, -1, -1, sizeof(::oteldemo::Address)},
+        {189, -1, -1, sizeof(::oteldemo::Money)},
+        {200, -1, -1, sizeof(::oteldemo::GetSupportedCurrenciesResponse)},
+        {209, 219, -1, sizeof(::oteldemo::CurrencyConversionRequest)},
+        {221, -1, -1, sizeof(::oteldemo::CreditCardInfo)},
+        {233, 243, -1, sizeof(::oteldemo::ChargeRequest)},
+        {245, -1, -1, sizeof(::oteldemo::ChargeResponse)},
+        {254, 264, -1, sizeof(::oteldemo::OrderItem)},
+        {266, 279, -1, sizeof(::oteldemo::OrderResult)},
+        {284, 294, -1, sizeof(::oteldemo::SendOrderConfirmationRequest)},
+        {296, 309, -1, sizeof(::oteldemo::PlaceOrderRequest)},
+        {314, 323, -1, sizeof(::oteldemo::PlaceOrderResponse)},
+        {324, -1, -1, sizeof(::oteldemo::AdRequest)},
+        {333, -1, -1, sizeof(::oteldemo::AdResponse)},
+        {342, -1, -1, sizeof(::oteldemo::Ad)},
+        {352, -1, -1, sizeof(::oteldemo::Flag)},
+        {363, -1, -1, sizeof(::oteldemo::GetFlagRequest)},
+        {372, 381, -1, sizeof(::oteldemo::GetFlagResponse)},
+        {382, -1, -1, sizeof(::oteldemo::CreateFlagRequest)},
+        {393, 402, -1, sizeof(::oteldemo::CreateFlagResponse)},
+        {403, -1, -1, sizeof(::oteldemo::UpdateFlagRequest)},
+        {413, -1, -1, sizeof(::oteldemo::UpdateFlagResponse)},
+        {421, -1, -1, sizeof(::oteldemo::ListFlagsRequest)},
+        {429, -1, -1, sizeof(::oteldemo::ListFlagsResponse)},
+        {438, -1, -1, sizeof(::oteldemo::DeleteFlagRequest)},
+        {447, -1, -1, sizeof(::oteldemo::DeleteFlagResponse)},
+};
+
+static const ::_pb::Message* const file_default_instances[] = {
+    &::oteldemo::_CartItem_default_instance_._instance,
+    &::oteldemo::_AddItemRequest_default_instance_._instance,
+    &::oteldemo::_EmptyCartRequest_default_instance_._instance,
+    &::oteldemo::_GetCartRequest_default_instance_._instance,
+    &::oteldemo::_Cart_default_instance_._instance,
+    &::oteldemo::_Empty_default_instance_._instance,
+    &::oteldemo::_ListRecommendationsRequest_default_instance_._instance,
+    &::oteldemo::_ListRecommendationsResponse_default_instance_._instance,
+    &::oteldemo::_Product_default_instance_._instance,
+    &::oteldemo::_ListProductsResponse_default_instance_._instance,
+    &::oteldemo::_GetProductRequest_default_instance_._instance,
+    &::oteldemo::_SearchProductsRequest_default_instance_._instance,
+    &::oteldemo::_SearchProductsResponse_default_instance_._instance,
+    &::oteldemo::_GetQuoteRequest_default_instance_._instance,
+    &::oteldemo::_GetQuoteResponse_default_instance_._instance,
+    &::oteldemo::_ShipOrderRequest_default_instance_._instance,
+    &::oteldemo::_ShipOrderResponse_default_instance_._instance,
+    &::oteldemo::_Address_default_instance_._instance,
+    &::oteldemo::_Money_default_instance_._instance,
+    &::oteldemo::_GetSupportedCurrenciesResponse_default_instance_._instance,
+    &::oteldemo::_CurrencyConversionRequest_default_instance_._instance,
+    &::oteldemo::_CreditCardInfo_default_instance_._instance,
+    &::oteldemo::_ChargeRequest_default_instance_._instance,
+    &::oteldemo::_ChargeResponse_default_instance_._instance,
+    &::oteldemo::_OrderItem_default_instance_._instance,
+    &::oteldemo::_OrderResult_default_instance_._instance,
+    &::oteldemo::_SendOrderConfirmationRequest_default_instance_._instance,
+    &::oteldemo::_PlaceOrderRequest_default_instance_._instance,
+    &::oteldemo::_PlaceOrderResponse_default_instance_._instance,
+    &::oteldemo::_AdRequest_default_instance_._instance,
+    &::oteldemo::_AdResponse_default_instance_._instance,
+    &::oteldemo::_Ad_default_instance_._instance,
+    &::oteldemo::_Flag_default_instance_._instance,
+    &::oteldemo::_GetFlagRequest_default_instance_._instance,
+    &::oteldemo::_GetFlagResponse_default_instance_._instance,
+    &::oteldemo::_CreateFlagRequest_default_instance_._instance,
+    &::oteldemo::_CreateFlagResponse_default_instance_._instance,
+    &::oteldemo::_UpdateFlagRequest_default_instance_._instance,
+    &::oteldemo::_UpdateFlagResponse_default_instance_._instance,
+    &::oteldemo::_ListFlagsRequest_default_instance_._instance,
+    &::oteldemo::_ListFlagsResponse_default_instance_._instance,
+    &::oteldemo::_DeleteFlagRequest_default_instance_._instance,
+    &::oteldemo::_DeleteFlagResponse_default_instance_._instance,
+};
+const char descriptor_table_protodef_demo_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+    "\n\ndemo.proto\022\010oteldemo\"0\n\010CartItem\022\022\n\npr"
+    "oduct_id\030\001 \001(\t\022\020\n\010quantity\030\002 \001(\005\"C\n\016AddI"
+    "temRequest\022\017\n\007user_id\030\001 \001(\t\022 \n\004item\030\002 \001("
+    "\0132\022.oteldemo.CartItem\"#\n\020EmptyCartReques"
+    "t\022\017\n\007user_id\030\001 \001(\t\"!\n\016GetCartRequest\022\017\n\007"
+    "user_id\030\001 \001(\t\":\n\004Cart\022\017\n\007user_id\030\001 \001(\t\022!"
+    "\n\005items\030\002 \003(\0132\022.oteldemo.CartItem\"\007\n\005Emp"
+    "ty\"B\n\032ListRecommendationsRequest\022\017\n\007user"
+    "_id\030\001 \001(\t\022\023\n\013product_ids\030\002 \003(\t\"2\n\033ListRe"
+    "commendationsResponse\022\023\n\013product_ids\030\001 \003"
+    "(\t\"\201\001\n\007Product\022\n\n\002id\030\001 \001(\t\022\014\n\004name\030\002 \001(\t"
+    "\022\023\n\013description\030\003 \001(\t\022\017\n\007picture\030\004 \001(\t\022\""
+    "\n\tprice_usd\030\005 \001(\0132\017.oteldemo.Money\022\022\n\nca"
+    "tegories\030\006 \003(\t\";\n\024ListProductsResponse\022#"
+    "\n\010products\030\001 \003(\0132\021.oteldemo.Product\"\037\n\021G"
+    "etProductRequest\022\n\n\002id\030\001 \001(\t\"&\n\025SearchPr"
+    "oductsRequest\022\r\n\005query\030\001 \001(\t\"<\n\026SearchPr"
+    "oductsResponse\022\"\n\007results\030\001 \003(\0132\021.otelde"
+    "mo.Product\"X\n\017GetQuoteRequest\022\"\n\007address"
+    "\030\001 \001(\0132\021.oteldemo.Address\022!\n\005items\030\002 \003(\013"
+    "2\022.oteldemo.CartItem\"5\n\020GetQuoteResponse"
+    "\022!\n\010cost_usd\030\001 \001(\0132\017.oteldemo.Money\"Y\n\020S"
+    "hipOrderRequest\022\"\n\007address\030\001 \001(\0132\021.oteld"
+    "emo.Address\022!\n\005items\030\002 \003(\0132\022.oteldemo.Ca"
+    "rtItem\"(\n\021ShipOrderResponse\022\023\n\013tracking_"
+    "id\030\001 \001(\t\"a\n\007Address\022\026\n\016street_address\030\001 "
+    "\001(\t\022\014\n\004city\030\002 \001(\t\022\r\n\005state\030\003 \001(\t\022\017\n\007coun"
+    "try\030\004 \001(\t\022\020\n\010zip_code\030\005 \001(\t\"<\n\005Money\022\025\n\r"
+    "currency_code\030\001 \001(\t\022\r\n\005units\030\002 \001(\003\022\r\n\005na"
+    "nos\030\003 \001(\005\"8\n\036GetSupportedCurrenciesRespo"
+    "nse\022\026\n\016currency_codes\030\001 \003(\t\"K\n\031CurrencyC"
+    "onversionRequest\022\035\n\004from\030\001 \001(\0132\017.oteldem"
+    "o.Money\022\017\n\007to_code\030\002 \001(\t\"\220\001\n\016CreditCardI"
+    "nfo\022\032\n\022credit_card_number\030\001 \001(\t\022\027\n\017credi"
+    "t_card_cvv\030\002 \001(\005\022#\n\033credit_card_expirati"
+    "on_year\030\003 \001(\005\022$\n\034credit_card_expiration_"
+    "month\030\004 \001(\005\"_\n\rChargeRequest\022\037\n\006amount\030\001"
+    " \001(\0132\017.oteldemo.Money\022-\n\013credit_card\030\002 \001"
+    "(\0132\030.oteldemo.CreditCardInfo\"(\n\016ChargeRe"
+    "sponse\022\026\n\016transaction_id\030\001 \001(\t\"L\n\tOrderI"
+    "tem\022 \n\004item\030\001 \001(\0132\022.oteldemo.CartItem\022\035\n"
+    "\004cost\030\002 \001(\0132\017.oteldemo.Money\"\266\001\n\013OrderRe"
+    "sult\022\020\n\010order_id\030\001 \001(\t\022\034\n\024shipping_track"
+    "ing_id\030\002 \001(\t\022&\n\rshipping_cost\030\003 \001(\0132\017.ot"
+    "eldemo.Money\022+\n\020shipping_address\030\004 \001(\0132\021"
+    ".oteldemo.Address\022\"\n\005items\030\005 \003(\0132\023.oteld"
+    "emo.OrderItem\"S\n\034SendOrderConfirmationRe"
+    "quest\022\r\n\005email\030\001 \001(\t\022$\n\005order\030\002 \001(\0132\025.ot"
+    "eldemo.OrderResult\"\235\001\n\021PlaceOrderRequest"
+    "\022\017\n\007user_id\030\001 \001(\t\022\025\n\ruser_currency\030\002 \001(\t"
+    "\022\"\n\007address\030\003 \001(\0132\021.oteldemo.Address\022\r\n\005"
+    "email\030\005 \001(\t\022-\n\013credit_card\030\006 \001(\0132\030.oteld"
+    "emo.CreditCardInfo\":\n\022PlaceOrderResponse"
+    "\022$\n\005order\030\001 \001(\0132\025.oteldemo.OrderResult\"!"
+    "\n\tAdRequest\022\024\n\014context_keys\030\001 \003(\t\"\'\n\nAdR"
+    "esponse\022\031\n\003ads\030\001 \003(\0132\014.oteldemo.Ad\"(\n\002Ad"
+    "\022\024\n\014redirect_url\030\001 \001(\t\022\014\n\004text\030\002 \001(\t\":\n\004"
+    "Flag\022\014\n\004name\030\001 \001(\t\022\023\n\013description\030\002 \001(\t\022"
+    "\017\n\007enabled\030\003 \001(\010\"\036\n\016GetFlagRequest\022\014\n\004na"
+    "me\030\001 \001(\t\"/\n\017GetFlagResponse\022\034\n\004flag\030\001 \001("
+    "\0132\016.oteldemo.Flag\"G\n\021CreateFlagRequest\022\014"
+    "\n\004name\030\001 \001(\t\022\023\n\013description\030\002 \001(\t\022\017\n\007ena"
+    "bled\030\003 \001(\010\"2\n\022CreateFlagResponse\022\034\n\004flag"
+    "\030\001 \001(\0132\016.oteldemo.Flag\"2\n\021UpdateFlagRequ"
+    "est\022\014\n\004name\030\001 \001(\t\022\017\n\007enabled\030\002 \001(\010\"\024\n\022Up"
+    "dateFlagResponse\"\022\n\020ListFlagsRequest\"1\n\021"
+    "ListFlagsResponse\022\034\n\004flag\030\001 \003(\0132\016.otelde"
+    "mo.Flag\"!\n\021DeleteFlagRequest\022\014\n\004name\030\001 \001"
+    "(\t\"\024\n\022DeleteFlagResponse2\270\001\n\013CartService"
+    "\0226\n\007AddItem\022\030.oteldemo.AddItemRequest\032\017."
+    "oteldemo.Empty\"\000\0225\n\007GetCart\022\030.oteldemo.G"
+    "etCartRequest\032\016.oteldemo.Cart\"\000\022:\n\tEmpty"
+    "Cart\022\032.oteldemo.EmptyCartRequest\032\017.oteld"
+    "emo.Empty\"\0002}\n\025RecommendationService\022d\n\023"
+    "ListRecommendations\022$.oteldemo.ListRecom"
+    "mendationsRequest\032%.oteldemo.ListRecomme"
+    "ndationsResponse\"\0002\361\001\n\025ProductCatalogSer"
+    "vice\022A\n\014ListProducts\022\017.oteldemo.Empty\032\036."
+    "oteldemo.ListProductsResponse\"\000\022>\n\nGetPr"
+    "oduct\022\033.oteldemo.GetProductRequest\032\021.ote"
+    "ldemo.Product\"\000\022U\n\016SearchProducts\022\037.otel"
+    "demo.SearchProductsRequest\032 .oteldemo.Se"
+    "archProductsResponse\"\0002\236\001\n\017ShippingServi"
+    "ce\022C\n\010GetQuote\022\031.oteldemo.GetQuoteReques"
+    "t\032\032.oteldemo.GetQuoteResponse\"\000\022F\n\tShipO"
+    "rder\022\032.oteldemo.ShipOrderRequest\032\033.oteld"
+    "emo.ShipOrderResponse\"\0002\253\001\n\017CurrencyServ"
+    "ice\022U\n\026GetSupportedCurrencies\022\017.oteldemo"
+    ".Empty\032(.oteldemo.GetSupportedCurrencies"
+    "Response\"\000\022A\n\007Convert\022#.oteldemo.Currenc"
+    "yConversionRequest\032\017.oteldemo.Money\"\0002O\n"
+    "\016PaymentService\022=\n\006Charge\022\027.oteldemo.Cha"
+    "rgeRequest\032\030.oteldemo.ChargeResponse\"\0002b"
+    "\n\014EmailService\022R\n\025SendOrderConfirmation\022"
+    "&.oteldemo.SendOrderConfirmationRequest\032"
+    "\017.oteldemo.Empty\"\0002\\\n\017CheckoutService\022I\n"
+    "\nPlaceOrder\022\033.oteldemo.PlaceOrderRequest"
+    "\032\034.oteldemo.PlaceOrderResponse\"\0002B\n\tAdSe"
+    "rvice\0225\n\006GetAds\022\023.oteldemo.AdRequest\032\024.o"
+    "teldemo.AdResponse\"\0002\377\002\n\022FeatureFlagServ"
+    "ice\022@\n\007GetFlag\022\030.oteldemo.GetFlagRequest"
+    "\032\031.oteldemo.GetFlagResponse\"\000\022I\n\nCreateF"
+    "lag\022\033.oteldemo.CreateFlagRequest\032\034.oteld"
+    "emo.CreateFlagResponse\"\000\022I\n\nUpdateFlag\022\033"
+    ".oteldemo.UpdateFlagRequest\032\034.oteldemo.U"
+    "pdateFlagResponse\"\000\022F\n\tListFlags\022\032.oteld"
+    "emo.ListFlagsRequest\032\033.oteldemo.ListFlag"
+    "sResponse\"\000\022I\n\nDeleteFlag\022\033.oteldemo.Del"
+    "eteFlagRequest\032\034.oteldemo.DeleteFlagResp"
+    "onse\"\000B\023Z\021genproto/oteldemob\006proto3"
+};
+static ::absl::once_flag descriptor_table_demo_2eproto_once;
+const ::_pbi::DescriptorTable descriptor_table_demo_2eproto = {
+    false,
+    false,
+    4395,
+    descriptor_table_protodef_demo_2eproto,
+    "demo.proto",
+    &descriptor_table_demo_2eproto_once,
+    nullptr,
+    0,
+    43,
+    schemas,
+    file_default_instances,
+    TableStruct_demo_2eproto::offsets,
+    file_level_metadata_demo_2eproto,
+    file_level_enum_descriptors_demo_2eproto,
+    file_level_service_descriptors_demo_2eproto,
+};
+
+// This function exists to be marked as weak.
+// It can significantly speed up compilation by breaking up LLVM's SCC
+// in the .pb.cc translation units. Large translation units see a
+// reduction of more than 35% of walltime for optimized builds. Without
+// the weak attribute all the messages in the file, including all the
+// vtables and everything they use become part of the same SCC through
+// a cycle like:
+// GetMetadata -> descriptor table -> default instances ->
+//   vtables -> GetMetadata
+// By adding a weak function here we break the connection from the
+// individual vtables back into the descriptor table.
+PROTOBUF_ATTRIBUTE_WEAK const ::_pbi::DescriptorTable* descriptor_table_demo_2eproto_getter() {
+  return &descriptor_table_demo_2eproto;
+}
+// Force running AddDescriptors() at dynamic initialization time.
+PROTOBUF_ATTRIBUTE_INIT_PRIORITY2
+static ::_pbi::AddDescriptorsRunner dynamic_init_dummy_demo_2eproto(&descriptor_table_demo_2eproto);
+namespace oteldemo {
+// ===================================================================
+
+class CartItem::_Internal {
+ public:
+};
+
+CartItem::CartItem(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.CartItem)
+}
+CartItem::CartItem(const CartItem& from) : ::google::protobuf::Message() {
+  CartItem* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.product_id_){},
+      decltype(_impl_.quantity_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.product_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.product_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_product_id().empty()) {
+    _this->_impl_.product_id_.Set(from._internal_product_id(), _this->GetArenaForAllocation());
+  }
+  _this->_impl_.quantity_ = from._impl_.quantity_;
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.CartItem)
+}
+inline void CartItem::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.product_id_){},
+      decltype(_impl_.quantity_){0},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.product_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.product_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+CartItem::~CartItem() {
+  // @@protoc_insertion_point(destructor:oteldemo.CartItem)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void CartItem::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.product_id_.Destroy();
+}
+void CartItem::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void CartItem::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.CartItem)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.product_id_.ClearToEmpty();
+  _impl_.quantity_ = 0;
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* CartItem::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 0, 36, 2> CartItem::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_CartItem_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // int32 quantity = 2;
+    {::_pbi::TcParser::SingularVarintNoZag1<::uint32_t, offsetof(CartItem, _impl_.quantity_), 63>(),
+     {16, 63, 0, PROTOBUF_FIELD_OFFSET(CartItem, _impl_.quantity_)}},
+    // string product_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(CartItem, _impl_.product_id_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string product_id = 1;
+    {PROTOBUF_FIELD_OFFSET(CartItem, _impl_.product_id_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // int32 quantity = 2;
+    {PROTOBUF_FIELD_OFFSET(CartItem, _impl_.quantity_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kInt32)},
+  }},
+  // no aux_entries
+  {{
+    "\21\12\0\0\0\0\0\0"
+    "oteldemo.CartItem"
+    "product_id"
+  }},
+};
+
+::uint8_t* CartItem::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.CartItem)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string product_id = 1;
+  if (!this->_internal_product_id().empty()) {
+    const std::string& _s = this->_internal_product_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.CartItem.product_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // int32 quantity = 2;
+  if (this->_internal_quantity() != 0) {
+    target = ::google::protobuf::internal::WireFormatLite::
+        WriteInt32ToArrayWithField<2>(
+            stream, this->_internal_quantity(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.CartItem)
+  return target;
+}
+
+::size_t CartItem::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.CartItem)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string product_id = 1;
+  if (!this->_internal_product_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_product_id());
+  }
+
+  // int32 quantity = 2;
+  if (this->_internal_quantity() != 0) {
+    total_size += ::_pbi::WireFormatLite::Int32SizePlusOne(
+        this->_internal_quantity());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData CartItem::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    CartItem::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*CartItem::GetClassData() const { return &_class_data_; }
+
+
+void CartItem::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<CartItem*>(&to_msg);
+  auto& from = static_cast<const CartItem&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.CartItem)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_product_id().empty()) {
+    _this->_internal_set_product_id(from._internal_product_id());
+  }
+  if (from._internal_quantity() != 0) {
+    _this->_internal_set_quantity(from._internal_quantity());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void CartItem::CopyFrom(const CartItem& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.CartItem)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool CartItem::IsInitialized() const {
+  return true;
+}
+
+void CartItem::InternalSwap(CartItem* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.product_id_, lhs_arena,
+                                       &other->_impl_.product_id_, rhs_arena);
+        swap(_impl_.quantity_, other->_impl_.quantity_);
+}
+
+::google::protobuf::Metadata CartItem::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[0]);
+}
+// ===================================================================
+
+class AddItemRequest::_Internal {
+ public:
+  using HasBits = decltype(std::declval<AddItemRequest>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(AddItemRequest, _impl_._has_bits_);
+  static const ::oteldemo::CartItem& item(const AddItemRequest* msg);
+  static void set_has_item(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::CartItem& AddItemRequest::_Internal::item(const AddItemRequest* msg) {
+  return *msg->_impl_.item_;
+}
+AddItemRequest::AddItemRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.AddItemRequest)
+}
+AddItemRequest::AddItemRequest(const AddItemRequest& from) : ::google::protobuf::Message() {
+  AddItemRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.user_id_){},
+      decltype(_impl_.item_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_user_id().empty()) {
+    _this->_impl_.user_id_.Set(from._internal_user_id(), _this->GetArenaForAllocation());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.item_ = new ::oteldemo::CartItem(*from._impl_.item_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.AddItemRequest)
+}
+inline void AddItemRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.user_id_){},
+      decltype(_impl_.item_){nullptr},
+  };
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+AddItemRequest::~AddItemRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.AddItemRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void AddItemRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.user_id_.Destroy();
+  if (this != internal_default_instance()) delete _impl_.item_;
+}
+void AddItemRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void AddItemRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.AddItemRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.user_id_.ClearToEmpty();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.item_ != nullptr);
+    _impl_.item_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* AddItemRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 1, 39, 2> AddItemRequest::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(AddItemRequest, _impl_._has_bits_),
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_AddItemRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .oteldemo.CartItem item = 2;
+    {::_pbi::TcParser::FastMtS1,
+     {18, 0, 0, PROTOBUF_FIELD_OFFSET(AddItemRequest, _impl_.item_)}},
+    // string user_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(AddItemRequest, _impl_.user_id_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string user_id = 1;
+    {PROTOBUF_FIELD_OFFSET(AddItemRequest, _impl_.user_id_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // .oteldemo.CartItem item = 2;
+    {PROTOBUF_FIELD_OFFSET(AddItemRequest, _impl_.item_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::CartItem>()},
+  }}, {{
+    "\27\7\0\0\0\0\0\0"
+    "oteldemo.AddItemRequest"
+    "user_id"
+  }},
+};
+
+::uint8_t* AddItemRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.AddItemRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    const std::string& _s = this->_internal_user_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.AddItemRequest.user_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.CartItem item = 2;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(2, _Internal::item(this),
+        _Internal::item(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.AddItemRequest)
+  return target;
+}
+
+::size_t AddItemRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.AddItemRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_user_id());
+  }
+
+  // .oteldemo.CartItem item = 2;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.item_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData AddItemRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    AddItemRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*AddItemRequest::GetClassData() const { return &_class_data_; }
+
+
+void AddItemRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<AddItemRequest*>(&to_msg);
+  auto& from = static_cast<const AddItemRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.AddItemRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_user_id().empty()) {
+    _this->_internal_set_user_id(from._internal_user_id());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_item()->::oteldemo::CartItem::MergeFrom(
+        from._internal_item());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void AddItemRequest::CopyFrom(const AddItemRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.AddItemRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool AddItemRequest::IsInitialized() const {
+  return true;
+}
+
+void AddItemRequest::InternalSwap(AddItemRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.user_id_, lhs_arena,
+                                       &other->_impl_.user_id_, rhs_arena);
+  swap(_impl_.item_, other->_impl_.item_);
+}
+
+::google::protobuf::Metadata AddItemRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[1]);
+}
+// ===================================================================
+
+class EmptyCartRequest::_Internal {
+ public:
+};
+
+EmptyCartRequest::EmptyCartRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.EmptyCartRequest)
+}
+EmptyCartRequest::EmptyCartRequest(const EmptyCartRequest& from) : ::google::protobuf::Message() {
+  EmptyCartRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.user_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_user_id().empty()) {
+    _this->_impl_.user_id_.Set(from._internal_user_id(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.EmptyCartRequest)
+}
+inline void EmptyCartRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.user_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+EmptyCartRequest::~EmptyCartRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.EmptyCartRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void EmptyCartRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.user_id_.Destroy();
+}
+void EmptyCartRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void EmptyCartRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.EmptyCartRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.user_id_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* EmptyCartRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 41, 2> EmptyCartRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_EmptyCartRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string user_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(EmptyCartRequest, _impl_.user_id_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string user_id = 1;
+    {PROTOBUF_FIELD_OFFSET(EmptyCartRequest, _impl_.user_id_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\31\7\0\0\0\0\0\0"
+    "oteldemo.EmptyCartRequest"
+    "user_id"
+  }},
+};
+
+::uint8_t* EmptyCartRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.EmptyCartRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    const std::string& _s = this->_internal_user_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.EmptyCartRequest.user_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.EmptyCartRequest)
+  return target;
+}
+
+::size_t EmptyCartRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.EmptyCartRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_user_id());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData EmptyCartRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    EmptyCartRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*EmptyCartRequest::GetClassData() const { return &_class_data_; }
+
+
+void EmptyCartRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<EmptyCartRequest*>(&to_msg);
+  auto& from = static_cast<const EmptyCartRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.EmptyCartRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_user_id().empty()) {
+    _this->_internal_set_user_id(from._internal_user_id());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void EmptyCartRequest::CopyFrom(const EmptyCartRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.EmptyCartRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool EmptyCartRequest::IsInitialized() const {
+  return true;
+}
+
+void EmptyCartRequest::InternalSwap(EmptyCartRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.user_id_, lhs_arena,
+                                       &other->_impl_.user_id_, rhs_arena);
+}
+
+::google::protobuf::Metadata EmptyCartRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[2]);
+}
+// ===================================================================
+
+class GetCartRequest::_Internal {
+ public:
+};
+
+GetCartRequest::GetCartRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.GetCartRequest)
+}
+GetCartRequest::GetCartRequest(const GetCartRequest& from) : ::google::protobuf::Message() {
+  GetCartRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.user_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_user_id().empty()) {
+    _this->_impl_.user_id_.Set(from._internal_user_id(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.GetCartRequest)
+}
+inline void GetCartRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.user_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+GetCartRequest::~GetCartRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.GetCartRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void GetCartRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.user_id_.Destroy();
+}
+void GetCartRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void GetCartRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.GetCartRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.user_id_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* GetCartRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 39, 2> GetCartRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_GetCartRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string user_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(GetCartRequest, _impl_.user_id_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string user_id = 1;
+    {PROTOBUF_FIELD_OFFSET(GetCartRequest, _impl_.user_id_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\27\7\0\0\0\0\0\0"
+    "oteldemo.GetCartRequest"
+    "user_id"
+  }},
+};
+
+::uint8_t* GetCartRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.GetCartRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    const std::string& _s = this->_internal_user_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.GetCartRequest.user_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.GetCartRequest)
+  return target;
+}
+
+::size_t GetCartRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.GetCartRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_user_id());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData GetCartRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    GetCartRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*GetCartRequest::GetClassData() const { return &_class_data_; }
+
+
+void GetCartRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<GetCartRequest*>(&to_msg);
+  auto& from = static_cast<const GetCartRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.GetCartRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_user_id().empty()) {
+    _this->_internal_set_user_id(from._internal_user_id());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void GetCartRequest::CopyFrom(const GetCartRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.GetCartRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool GetCartRequest::IsInitialized() const {
+  return true;
+}
+
+void GetCartRequest::InternalSwap(GetCartRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.user_id_, lhs_arena,
+                                       &other->_impl_.user_id_, rhs_arena);
+}
+
+::google::protobuf::Metadata GetCartRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[3]);
+}
+// ===================================================================
+
+class Cart::_Internal {
+ public:
+};
+
+Cart::Cart(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.Cart)
+}
+Cart::Cart(const Cart& from) : ::google::protobuf::Message() {
+  Cart* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.items_){from._impl_.items_},
+      decltype(_impl_.user_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_user_id().empty()) {
+    _this->_impl_.user_id_.Set(from._internal_user_id(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.Cart)
+}
+inline void Cart::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.items_){arena},
+      decltype(_impl_.user_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+Cart::~Cart() {
+  // @@protoc_insertion_point(destructor:oteldemo.Cart)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void Cart::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.items_.~RepeatedPtrField();
+  _impl_.user_id_.Destroy();
+}
+void Cart::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void Cart::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.Cart)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_items()->Clear();
+  _impl_.user_id_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* Cart::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 1, 29, 2> Cart::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_Cart_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .oteldemo.CartItem items = 2;
+    {::_pbi::TcParser::FastMtR1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(Cart, _impl_.items_)}},
+    // string user_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(Cart, _impl_.user_id_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string user_id = 1;
+    {PROTOBUF_FIELD_OFFSET(Cart, _impl_.user_id_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // repeated .oteldemo.CartItem items = 2;
+    {PROTOBUF_FIELD_OFFSET(Cart, _impl_.items_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::CartItem>()},
+  }}, {{
+    "\15\7\0\0\0\0\0\0"
+    "oteldemo.Cart"
+    "user_id"
+  }},
+};
+
+::uint8_t* Cart::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.Cart)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    const std::string& _s = this->_internal_user_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Cart.user_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // repeated .oteldemo.CartItem items = 2;
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_items_size()); i < n; i++) {
+    const auto& repfield = this->_internal_items().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(2, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.Cart)
+  return target;
+}
+
+::size_t Cart::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.Cart)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .oteldemo.CartItem items = 2;
+  total_size += 1UL * this->_internal_items_size();
+  for (const auto& msg : this->_internal_items()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_user_id());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData Cart::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    Cart::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*Cart::GetClassData() const { return &_class_data_; }
+
+
+void Cart::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<Cart*>(&to_msg);
+  auto& from = static_cast<const Cart&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.Cart)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_items()->MergeFrom(from._internal_items());
+  if (!from._internal_user_id().empty()) {
+    _this->_internal_set_user_id(from._internal_user_id());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void Cart::CopyFrom(const Cart& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.Cart)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool Cart::IsInitialized() const {
+  return true;
+}
+
+void Cart::InternalSwap(Cart* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.items_.InternalSwap(&other->_impl_.items_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.user_id_, lhs_arena,
+                                       &other->_impl_.user_id_, rhs_arena);
+}
+
+::google::protobuf::Metadata Cart::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[4]);
+}
+// ===================================================================
+
+class Empty::_Internal {
+ public:
+};
+
+Empty::Empty(::google::protobuf::Arena* arena)
+    : ::google::protobuf::internal::ZeroFieldsBase(arena) {
+  // @@protoc_insertion_point(arena_constructor:oteldemo.Empty)
+}
+Empty::Empty(const Empty& from) : ::google::protobuf::internal::ZeroFieldsBase() {
+  Empty* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.Empty)
+}
+
+
+
+
+const ::google::protobuf::Message::ClassData Empty::_class_data_ = {
+    ::google::protobuf::internal::ZeroFieldsBase::CopyImpl,
+    ::google::protobuf::internal::ZeroFieldsBase::MergeImpl,
+};
+const ::google::protobuf::Message::ClassData*Empty::GetClassData() const { return &_class_data_; }
+
+
+
+
+
+
+
+::google::protobuf::Metadata Empty::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[5]);
+}
+// ===================================================================
+
+class ListRecommendationsRequest::_Internal {
+ public:
+};
+
+ListRecommendationsRequest::ListRecommendationsRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.ListRecommendationsRequest)
+}
+ListRecommendationsRequest::ListRecommendationsRequest(const ListRecommendationsRequest& from) : ::google::protobuf::Message() {
+  ListRecommendationsRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.product_ids_){from._impl_.product_ids_},
+      decltype(_impl_.user_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_user_id().empty()) {
+    _this->_impl_.user_id_.Set(from._internal_user_id(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.ListRecommendationsRequest)
+}
+inline void ListRecommendationsRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.product_ids_){arena},
+      decltype(_impl_.user_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+ListRecommendationsRequest::~ListRecommendationsRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.ListRecommendationsRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void ListRecommendationsRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _internal_mutable_product_ids()->~RepeatedPtrField();
+  _impl_.user_id_.Destroy();
+}
+void ListRecommendationsRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void ListRecommendationsRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.ListRecommendationsRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_product_ids()->Clear();
+  _impl_.user_id_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* ListRecommendationsRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 0, 62, 2> ListRecommendationsRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_ListRecommendationsRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated string product_ids = 2;
+    {::_pbi::TcParser::FastUR1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(ListRecommendationsRequest, _impl_.product_ids_)}},
+    // string user_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(ListRecommendationsRequest, _impl_.user_id_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string user_id = 1;
+    {PROTOBUF_FIELD_OFFSET(ListRecommendationsRequest, _impl_.user_id_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // repeated string product_ids = 2;
+    {PROTOBUF_FIELD_OFFSET(ListRecommendationsRequest, _impl_.product_ids_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kUtf8String | ::_fl::kRepSString)},
+  }},
+  // no aux_entries
+  {{
+    "\43\7\13\0\0\0\0\0"
+    "oteldemo.ListRecommendationsRequest"
+    "user_id"
+    "product_ids"
+  }},
+};
+
+::uint8_t* ListRecommendationsRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.ListRecommendationsRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    const std::string& _s = this->_internal_user_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.ListRecommendationsRequest.user_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // repeated string product_ids = 2;
+  for (int i = 0, n = this->_internal_product_ids_size(); i < n; ++i) {
+    const auto& s = this->_internal_product_ids().Get(i);
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        s.data(), static_cast<int>(s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.ListRecommendationsRequest.product_ids");
+    target = stream->WriteString(2, s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.ListRecommendationsRequest)
+  return target;
+}
+
+::size_t ListRecommendationsRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.ListRecommendationsRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated string product_ids = 2;
+  total_size += 1 * ::google::protobuf::internal::FromIntSize(_internal_product_ids().size());
+  for (int i = 0, n = _internal_product_ids().size(); i < n; ++i) {
+    total_size += ::google::protobuf::internal::WireFormatLite::StringSize(
+        _internal_product_ids().Get(i));
+  }
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_user_id());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ListRecommendationsRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    ListRecommendationsRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*ListRecommendationsRequest::GetClassData() const { return &_class_data_; }
+
+
+void ListRecommendationsRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ListRecommendationsRequest*>(&to_msg);
+  auto& from = static_cast<const ListRecommendationsRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.ListRecommendationsRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_product_ids()->MergeFrom(from._internal_product_ids());
+  if (!from._internal_user_id().empty()) {
+    _this->_internal_set_user_id(from._internal_user_id());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ListRecommendationsRequest::CopyFrom(const ListRecommendationsRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.ListRecommendationsRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ListRecommendationsRequest::IsInitialized() const {
+  return true;
+}
+
+void ListRecommendationsRequest::InternalSwap(ListRecommendationsRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.product_ids_.InternalSwap(&other->_impl_.product_ids_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.user_id_, lhs_arena,
+                                       &other->_impl_.user_id_, rhs_arena);
+}
+
+::google::protobuf::Metadata ListRecommendationsRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[6]);
+}
+// ===================================================================
+
+class ListRecommendationsResponse::_Internal {
+ public:
+};
+
+ListRecommendationsResponse::ListRecommendationsResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.ListRecommendationsResponse)
+}
+ListRecommendationsResponse::ListRecommendationsResponse(const ListRecommendationsResponse& from) : ::google::protobuf::Message() {
+  ListRecommendationsResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.product_ids_){from._impl_.product_ids_},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.ListRecommendationsResponse)
+}
+inline void ListRecommendationsResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.product_ids_){arena},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+}
+ListRecommendationsResponse::~ListRecommendationsResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.ListRecommendationsResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void ListRecommendationsResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _internal_mutable_product_ids()->~RepeatedPtrField();
+}
+void ListRecommendationsResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void ListRecommendationsResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.ListRecommendationsResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_product_ids()->Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* ListRecommendationsResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 56, 2> ListRecommendationsResponse::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_ListRecommendationsResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated string product_ids = 1;
+    {::_pbi::TcParser::FastUR1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(ListRecommendationsResponse, _impl_.product_ids_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // repeated string product_ids = 1;
+    {PROTOBUF_FIELD_OFFSET(ListRecommendationsResponse, _impl_.product_ids_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kUtf8String | ::_fl::kRepSString)},
+  }},
+  // no aux_entries
+  {{
+    "\44\13\0\0\0\0\0\0"
+    "oteldemo.ListRecommendationsResponse"
+    "product_ids"
+  }},
+};
+
+::uint8_t* ListRecommendationsResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.ListRecommendationsResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // repeated string product_ids = 1;
+  for (int i = 0, n = this->_internal_product_ids_size(); i < n; ++i) {
+    const auto& s = this->_internal_product_ids().Get(i);
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        s.data(), static_cast<int>(s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.ListRecommendationsResponse.product_ids");
+    target = stream->WriteString(1, s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.ListRecommendationsResponse)
+  return target;
+}
+
+::size_t ListRecommendationsResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.ListRecommendationsResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated string product_ids = 1;
+  total_size += 1 * ::google::protobuf::internal::FromIntSize(_internal_product_ids().size());
+  for (int i = 0, n = _internal_product_ids().size(); i < n; ++i) {
+    total_size += ::google::protobuf::internal::WireFormatLite::StringSize(
+        _internal_product_ids().Get(i));
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ListRecommendationsResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    ListRecommendationsResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*ListRecommendationsResponse::GetClassData() const { return &_class_data_; }
+
+
+void ListRecommendationsResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ListRecommendationsResponse*>(&to_msg);
+  auto& from = static_cast<const ListRecommendationsResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.ListRecommendationsResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_product_ids()->MergeFrom(from._internal_product_ids());
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ListRecommendationsResponse::CopyFrom(const ListRecommendationsResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.ListRecommendationsResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ListRecommendationsResponse::IsInitialized() const {
+  return true;
+}
+
+void ListRecommendationsResponse::InternalSwap(ListRecommendationsResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.product_ids_.InternalSwap(&other->_impl_.product_ids_);
+}
+
+::google::protobuf::Metadata ListRecommendationsResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[7]);
+}
+// ===================================================================
+
+class Product::_Internal {
+ public:
+  using HasBits = decltype(std::declval<Product>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(Product, _impl_._has_bits_);
+  static const ::oteldemo::Money& price_usd(const Product* msg);
+  static void set_has_price_usd(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::Money& Product::_Internal::price_usd(const Product* msg) {
+  return *msg->_impl_.price_usd_;
+}
+Product::Product(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.Product)
+}
+Product::Product(const Product& from) : ::google::protobuf::Message() {
+  Product* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.categories_){from._impl_.categories_},
+      decltype(_impl_.id_){},
+      decltype(_impl_.name_){},
+      decltype(_impl_.description_){},
+      decltype(_impl_.picture_){},
+      decltype(_impl_.price_usd_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_id().empty()) {
+    _this->_impl_.id_.Set(from._internal_id(), _this->GetArenaForAllocation());
+  }
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_name().empty()) {
+    _this->_impl_.name_.Set(from._internal_name(), _this->GetArenaForAllocation());
+  }
+  _impl_.description_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.description_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_description().empty()) {
+    _this->_impl_.description_.Set(from._internal_description(), _this->GetArenaForAllocation());
+  }
+  _impl_.picture_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.picture_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_picture().empty()) {
+    _this->_impl_.picture_.Set(from._internal_picture(), _this->GetArenaForAllocation());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.price_usd_ = new ::oteldemo::Money(*from._impl_.price_usd_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.Product)
+}
+inline void Product::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.categories_){arena},
+      decltype(_impl_.id_){},
+      decltype(_impl_.name_){},
+      decltype(_impl_.description_){},
+      decltype(_impl_.picture_){},
+      decltype(_impl_.price_usd_){nullptr},
+  };
+  _impl_.id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.description_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.description_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.picture_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.picture_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+Product::~Product() {
+  // @@protoc_insertion_point(destructor:oteldemo.Product)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void Product::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _internal_mutable_categories()->~RepeatedPtrField();
+  _impl_.id_.Destroy();
+  _impl_.name_.Destroy();
+  _impl_.description_.Destroy();
+  _impl_.picture_.Destroy();
+  if (this != internal_default_instance()) delete _impl_.price_usd_;
+}
+void Product::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void Product::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.Product)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_categories()->Clear();
+  _impl_.id_.ClearToEmpty();
+  _impl_.name_.ClearToEmpty();
+  _impl_.description_.ClearToEmpty();
+  _impl_.picture_.ClearToEmpty();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.price_usd_ != nullptr);
+    _impl_.price_usd_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* Product::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<3, 6, 1, 59, 2> Product::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(Product, _impl_._has_bits_),
+    0, // no _extensions_
+    6, 56,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967232,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    6,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_Product_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    {::_pbi::TcParser::MiniParse, {}},
+    // string id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(Product, _impl_.id_)}},
+    // string name = 2;
+    {::_pbi::TcParser::FastUS1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(Product, _impl_.name_)}},
+    // string description = 3;
+    {::_pbi::TcParser::FastUS1,
+     {26, 63, 0, PROTOBUF_FIELD_OFFSET(Product, _impl_.description_)}},
+    // string picture = 4;
+    {::_pbi::TcParser::FastUS1,
+     {34, 63, 0, PROTOBUF_FIELD_OFFSET(Product, _impl_.picture_)}},
+    // .oteldemo.Money price_usd = 5;
+    {::_pbi::TcParser::FastMtS1,
+     {42, 0, 0, PROTOBUF_FIELD_OFFSET(Product, _impl_.price_usd_)}},
+    // repeated string categories = 6;
+    {::_pbi::TcParser::FastUR1,
+     {50, 63, 0, PROTOBUF_FIELD_OFFSET(Product, _impl_.categories_)}},
+    {::_pbi::TcParser::MiniParse, {}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string id = 1;
+    {PROTOBUF_FIELD_OFFSET(Product, _impl_.id_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string name = 2;
+    {PROTOBUF_FIELD_OFFSET(Product, _impl_.name_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string description = 3;
+    {PROTOBUF_FIELD_OFFSET(Product, _impl_.description_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string picture = 4;
+    {PROTOBUF_FIELD_OFFSET(Product, _impl_.picture_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // .oteldemo.Money price_usd = 5;
+    {PROTOBUF_FIELD_OFFSET(Product, _impl_.price_usd_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // repeated string categories = 6;
+    {PROTOBUF_FIELD_OFFSET(Product, _impl_.categories_), -1, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kUtf8String | ::_fl::kRepSString)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Money>()},
+  }}, {{
+    "\20\2\4\13\7\0\12\0"
+    "oteldemo.Product"
+    "id"
+    "name"
+    "description"
+    "picture"
+    "categories"
+  }},
+};
+
+::uint8_t* Product::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.Product)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string id = 1;
+  if (!this->_internal_id().empty()) {
+    const std::string& _s = this->_internal_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Product.id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // string name = 2;
+  if (!this->_internal_name().empty()) {
+    const std::string& _s = this->_internal_name();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Product.name");
+    target = stream->WriteStringMaybeAliased(2, _s, target);
+  }
+
+  // string description = 3;
+  if (!this->_internal_description().empty()) {
+    const std::string& _s = this->_internal_description();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Product.description");
+    target = stream->WriteStringMaybeAliased(3, _s, target);
+  }
+
+  // string picture = 4;
+  if (!this->_internal_picture().empty()) {
+    const std::string& _s = this->_internal_picture();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Product.picture");
+    target = stream->WriteStringMaybeAliased(4, _s, target);
+  }
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Money price_usd = 5;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(5, _Internal::price_usd(this),
+        _Internal::price_usd(this).GetCachedSize(), target, stream);
+  }
+
+  // repeated string categories = 6;
+  for (int i = 0, n = this->_internal_categories_size(); i < n; ++i) {
+    const auto& s = this->_internal_categories().Get(i);
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        s.data(), static_cast<int>(s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Product.categories");
+    target = stream->WriteString(6, s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.Product)
+  return target;
+}
+
+::size_t Product::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.Product)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated string categories = 6;
+  total_size += 1 * ::google::protobuf::internal::FromIntSize(_internal_categories().size());
+  for (int i = 0, n = _internal_categories().size(); i < n; ++i) {
+    total_size += ::google::protobuf::internal::WireFormatLite::StringSize(
+        _internal_categories().Get(i));
+  }
+  // string id = 1;
+  if (!this->_internal_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_id());
+  }
+
+  // string name = 2;
+  if (!this->_internal_name().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_name());
+  }
+
+  // string description = 3;
+  if (!this->_internal_description().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_description());
+  }
+
+  // string picture = 4;
+  if (!this->_internal_picture().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_picture());
+  }
+
+  // .oteldemo.Money price_usd = 5;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.price_usd_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData Product::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    Product::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*Product::GetClassData() const { return &_class_data_; }
+
+
+void Product::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<Product*>(&to_msg);
+  auto& from = static_cast<const Product&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.Product)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_categories()->MergeFrom(from._internal_categories());
+  if (!from._internal_id().empty()) {
+    _this->_internal_set_id(from._internal_id());
+  }
+  if (!from._internal_name().empty()) {
+    _this->_internal_set_name(from._internal_name());
+  }
+  if (!from._internal_description().empty()) {
+    _this->_internal_set_description(from._internal_description());
+  }
+  if (!from._internal_picture().empty()) {
+    _this->_internal_set_picture(from._internal_picture());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_price_usd()->::oteldemo::Money::MergeFrom(
+        from._internal_price_usd());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void Product::CopyFrom(const Product& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.Product)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool Product::IsInitialized() const {
+  return true;
+}
+
+void Product::InternalSwap(Product* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  _impl_.categories_.InternalSwap(&other->_impl_.categories_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.id_, lhs_arena,
+                                       &other->_impl_.id_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.name_, lhs_arena,
+                                       &other->_impl_.name_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.description_, lhs_arena,
+                                       &other->_impl_.description_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.picture_, lhs_arena,
+                                       &other->_impl_.picture_, rhs_arena);
+  swap(_impl_.price_usd_, other->_impl_.price_usd_);
+}
+
+::google::protobuf::Metadata Product::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[8]);
+}
+// ===================================================================
+
+class ListProductsResponse::_Internal {
+ public:
+};
+
+ListProductsResponse::ListProductsResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.ListProductsResponse)
+}
+ListProductsResponse::ListProductsResponse(const ListProductsResponse& from) : ::google::protobuf::Message() {
+  ListProductsResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.products_){from._impl_.products_},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.ListProductsResponse)
+}
+inline void ListProductsResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.products_){arena},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+}
+ListProductsResponse::~ListProductsResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.ListProductsResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void ListProductsResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.products_.~RepeatedPtrField();
+}
+void ListProductsResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void ListProductsResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.ListProductsResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_products()->Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* ListProductsResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> ListProductsResponse::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_ListProductsResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .oteldemo.Product products = 1;
+    {::_pbi::TcParser::FastMtR1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(ListProductsResponse, _impl_.products_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // repeated .oteldemo.Product products = 1;
+    {PROTOBUF_FIELD_OFFSET(ListProductsResponse, _impl_.products_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Product>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* ListProductsResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.ListProductsResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // repeated .oteldemo.Product products = 1;
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_products_size()); i < n; i++) {
+    const auto& repfield = this->_internal_products().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(1, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.ListProductsResponse)
+  return target;
+}
+
+::size_t ListProductsResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.ListProductsResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .oteldemo.Product products = 1;
+  total_size += 1UL * this->_internal_products_size();
+  for (const auto& msg : this->_internal_products()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ListProductsResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    ListProductsResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*ListProductsResponse::GetClassData() const { return &_class_data_; }
+
+
+void ListProductsResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ListProductsResponse*>(&to_msg);
+  auto& from = static_cast<const ListProductsResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.ListProductsResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_products()->MergeFrom(from._internal_products());
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ListProductsResponse::CopyFrom(const ListProductsResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.ListProductsResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ListProductsResponse::IsInitialized() const {
+  return true;
+}
+
+void ListProductsResponse::InternalSwap(ListProductsResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.products_.InternalSwap(&other->_impl_.products_);
+}
+
+::google::protobuf::Metadata ListProductsResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[9]);
+}
+// ===================================================================
+
+class GetProductRequest::_Internal {
+ public:
+};
+
+GetProductRequest::GetProductRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.GetProductRequest)
+}
+GetProductRequest::GetProductRequest(const GetProductRequest& from) : ::google::protobuf::Message() {
+  GetProductRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_id().empty()) {
+    _this->_impl_.id_.Set(from._internal_id(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.GetProductRequest)
+}
+inline void GetProductRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+GetProductRequest::~GetProductRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.GetProductRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void GetProductRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.id_.Destroy();
+}
+void GetProductRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void GetProductRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.GetProductRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.id_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* GetProductRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 37, 2> GetProductRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_GetProductRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(GetProductRequest, _impl_.id_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string id = 1;
+    {PROTOBUF_FIELD_OFFSET(GetProductRequest, _impl_.id_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\32\2\0\0\0\0\0\0"
+    "oteldemo.GetProductRequest"
+    "id"
+  }},
+};
+
+::uint8_t* GetProductRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.GetProductRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string id = 1;
+  if (!this->_internal_id().empty()) {
+    const std::string& _s = this->_internal_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.GetProductRequest.id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.GetProductRequest)
+  return target;
+}
+
+::size_t GetProductRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.GetProductRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string id = 1;
+  if (!this->_internal_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_id());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData GetProductRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    GetProductRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*GetProductRequest::GetClassData() const { return &_class_data_; }
+
+
+void GetProductRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<GetProductRequest*>(&to_msg);
+  auto& from = static_cast<const GetProductRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.GetProductRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_id().empty()) {
+    _this->_internal_set_id(from._internal_id());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void GetProductRequest::CopyFrom(const GetProductRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.GetProductRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool GetProductRequest::IsInitialized() const {
+  return true;
+}
+
+void GetProductRequest::InternalSwap(GetProductRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.id_, lhs_arena,
+                                       &other->_impl_.id_, rhs_arena);
+}
+
+::google::protobuf::Metadata GetProductRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[10]);
+}
+// ===================================================================
+
+class SearchProductsRequest::_Internal {
+ public:
+};
+
+SearchProductsRequest::SearchProductsRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.SearchProductsRequest)
+}
+SearchProductsRequest::SearchProductsRequest(const SearchProductsRequest& from) : ::google::protobuf::Message() {
+  SearchProductsRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.query_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.query_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.query_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_query().empty()) {
+    _this->_impl_.query_.Set(from._internal_query(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.SearchProductsRequest)
+}
+inline void SearchProductsRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.query_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.query_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.query_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+SearchProductsRequest::~SearchProductsRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.SearchProductsRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void SearchProductsRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.query_.Destroy();
+}
+void SearchProductsRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void SearchProductsRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.SearchProductsRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.query_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* SearchProductsRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 44, 2> SearchProductsRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_SearchProductsRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string query = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(SearchProductsRequest, _impl_.query_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string query = 1;
+    {PROTOBUF_FIELD_OFFSET(SearchProductsRequest, _impl_.query_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\36\5\0\0\0\0\0\0"
+    "oteldemo.SearchProductsRequest"
+    "query"
+  }},
+};
+
+::uint8_t* SearchProductsRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.SearchProductsRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string query = 1;
+  if (!this->_internal_query().empty()) {
+    const std::string& _s = this->_internal_query();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.SearchProductsRequest.query");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.SearchProductsRequest)
+  return target;
+}
+
+::size_t SearchProductsRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.SearchProductsRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string query = 1;
+  if (!this->_internal_query().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_query());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData SearchProductsRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    SearchProductsRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*SearchProductsRequest::GetClassData() const { return &_class_data_; }
+
+
+void SearchProductsRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<SearchProductsRequest*>(&to_msg);
+  auto& from = static_cast<const SearchProductsRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.SearchProductsRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_query().empty()) {
+    _this->_internal_set_query(from._internal_query());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void SearchProductsRequest::CopyFrom(const SearchProductsRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.SearchProductsRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool SearchProductsRequest::IsInitialized() const {
+  return true;
+}
+
+void SearchProductsRequest::InternalSwap(SearchProductsRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.query_, lhs_arena,
+                                       &other->_impl_.query_, rhs_arena);
+}
+
+::google::protobuf::Metadata SearchProductsRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[11]);
+}
+// ===================================================================
+
+class SearchProductsResponse::_Internal {
+ public:
+};
+
+SearchProductsResponse::SearchProductsResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.SearchProductsResponse)
+}
+SearchProductsResponse::SearchProductsResponse(const SearchProductsResponse& from) : ::google::protobuf::Message() {
+  SearchProductsResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.results_){from._impl_.results_},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.SearchProductsResponse)
+}
+inline void SearchProductsResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.results_){arena},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+}
+SearchProductsResponse::~SearchProductsResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.SearchProductsResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void SearchProductsResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.results_.~RepeatedPtrField();
+}
+void SearchProductsResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void SearchProductsResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.SearchProductsResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_results()->Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* SearchProductsResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> SearchProductsResponse::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_SearchProductsResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .oteldemo.Product results = 1;
+    {::_pbi::TcParser::FastMtR1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(SearchProductsResponse, _impl_.results_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // repeated .oteldemo.Product results = 1;
+    {PROTOBUF_FIELD_OFFSET(SearchProductsResponse, _impl_.results_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Product>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* SearchProductsResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.SearchProductsResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // repeated .oteldemo.Product results = 1;
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_results_size()); i < n; i++) {
+    const auto& repfield = this->_internal_results().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(1, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.SearchProductsResponse)
+  return target;
+}
+
+::size_t SearchProductsResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.SearchProductsResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .oteldemo.Product results = 1;
+  total_size += 1UL * this->_internal_results_size();
+  for (const auto& msg : this->_internal_results()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData SearchProductsResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    SearchProductsResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*SearchProductsResponse::GetClassData() const { return &_class_data_; }
+
+
+void SearchProductsResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<SearchProductsResponse*>(&to_msg);
+  auto& from = static_cast<const SearchProductsResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.SearchProductsResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_results()->MergeFrom(from._internal_results());
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void SearchProductsResponse::CopyFrom(const SearchProductsResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.SearchProductsResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool SearchProductsResponse::IsInitialized() const {
+  return true;
+}
+
+void SearchProductsResponse::InternalSwap(SearchProductsResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.results_.InternalSwap(&other->_impl_.results_);
+}
+
+::google::protobuf::Metadata SearchProductsResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[12]);
+}
+// ===================================================================
+
+class GetQuoteRequest::_Internal {
+ public:
+  using HasBits = decltype(std::declval<GetQuoteRequest>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(GetQuoteRequest, _impl_._has_bits_);
+  static const ::oteldemo::Address& address(const GetQuoteRequest* msg);
+  static void set_has_address(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::Address& GetQuoteRequest::_Internal::address(const GetQuoteRequest* msg) {
+  return *msg->_impl_.address_;
+}
+GetQuoteRequest::GetQuoteRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.GetQuoteRequest)
+}
+GetQuoteRequest::GetQuoteRequest(const GetQuoteRequest& from) : ::google::protobuf::Message() {
+  GetQuoteRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.items_){from._impl_.items_},
+      decltype(_impl_.address_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.address_ = new ::oteldemo::Address(*from._impl_.address_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.GetQuoteRequest)
+}
+inline void GetQuoteRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.items_){arena},
+      decltype(_impl_.address_){nullptr},
+  };
+}
+GetQuoteRequest::~GetQuoteRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.GetQuoteRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void GetQuoteRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.items_.~RepeatedPtrField();
+  if (this != internal_default_instance()) delete _impl_.address_;
+}
+void GetQuoteRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void GetQuoteRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.GetQuoteRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_items()->Clear();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.address_ != nullptr);
+    _impl_.address_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* GetQuoteRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 2, 0, 2> GetQuoteRequest::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(GetQuoteRequest, _impl_._has_bits_),
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    2,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_GetQuoteRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .oteldemo.CartItem items = 2;
+    {::_pbi::TcParser::FastMtR1,
+     {18, 63, 1, PROTOBUF_FIELD_OFFSET(GetQuoteRequest, _impl_.items_)}},
+    // .oteldemo.Address address = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(GetQuoteRequest, _impl_.address_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .oteldemo.Address address = 1;
+    {PROTOBUF_FIELD_OFFSET(GetQuoteRequest, _impl_.address_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // repeated .oteldemo.CartItem items = 2;
+    {PROTOBUF_FIELD_OFFSET(GetQuoteRequest, _impl_.items_), -1, 1,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Address>()},
+    {::_pbi::TcParser::GetTable<::oteldemo::CartItem>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* GetQuoteRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.GetQuoteRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Address address = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::address(this),
+        _Internal::address(this).GetCachedSize(), target, stream);
+  }
+
+  // repeated .oteldemo.CartItem items = 2;
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_items_size()); i < n; i++) {
+    const auto& repfield = this->_internal_items().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(2, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.GetQuoteRequest)
+  return target;
+}
+
+::size_t GetQuoteRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.GetQuoteRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .oteldemo.CartItem items = 2;
+  total_size += 1UL * this->_internal_items_size();
+  for (const auto& msg : this->_internal_items()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  // .oteldemo.Address address = 1;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.address_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData GetQuoteRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    GetQuoteRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*GetQuoteRequest::GetClassData() const { return &_class_data_; }
+
+
+void GetQuoteRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<GetQuoteRequest*>(&to_msg);
+  auto& from = static_cast<const GetQuoteRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.GetQuoteRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_items()->MergeFrom(from._internal_items());
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_address()->::oteldemo::Address::MergeFrom(
+        from._internal_address());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void GetQuoteRequest::CopyFrom(const GetQuoteRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.GetQuoteRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool GetQuoteRequest::IsInitialized() const {
+  return true;
+}
+
+void GetQuoteRequest::InternalSwap(GetQuoteRequest* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  _impl_.items_.InternalSwap(&other->_impl_.items_);
+  swap(_impl_.address_, other->_impl_.address_);
+}
+
+::google::protobuf::Metadata GetQuoteRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[13]);
+}
+// ===================================================================
+
+class GetQuoteResponse::_Internal {
+ public:
+  using HasBits = decltype(std::declval<GetQuoteResponse>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(GetQuoteResponse, _impl_._has_bits_);
+  static const ::oteldemo::Money& cost_usd(const GetQuoteResponse* msg);
+  static void set_has_cost_usd(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::Money& GetQuoteResponse::_Internal::cost_usd(const GetQuoteResponse* msg) {
+  return *msg->_impl_.cost_usd_;
+}
+GetQuoteResponse::GetQuoteResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.GetQuoteResponse)
+}
+GetQuoteResponse::GetQuoteResponse(const GetQuoteResponse& from) : ::google::protobuf::Message() {
+  GetQuoteResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.cost_usd_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.cost_usd_ = new ::oteldemo::Money(*from._impl_.cost_usd_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.GetQuoteResponse)
+}
+inline void GetQuoteResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.cost_usd_){nullptr},
+  };
+}
+GetQuoteResponse::~GetQuoteResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.GetQuoteResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void GetQuoteResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.cost_usd_;
+}
+void GetQuoteResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void GetQuoteResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.GetQuoteResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.cost_usd_ != nullptr);
+    _impl_.cost_usd_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* GetQuoteResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> GetQuoteResponse::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(GetQuoteResponse, _impl_._has_bits_),
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_GetQuoteResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .oteldemo.Money cost_usd = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(GetQuoteResponse, _impl_.cost_usd_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .oteldemo.Money cost_usd = 1;
+    {PROTOBUF_FIELD_OFFSET(GetQuoteResponse, _impl_.cost_usd_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Money>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* GetQuoteResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.GetQuoteResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Money cost_usd = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::cost_usd(this),
+        _Internal::cost_usd(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.GetQuoteResponse)
+  return target;
+}
+
+::size_t GetQuoteResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.GetQuoteResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .oteldemo.Money cost_usd = 1;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.cost_usd_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData GetQuoteResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    GetQuoteResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*GetQuoteResponse::GetClassData() const { return &_class_data_; }
+
+
+void GetQuoteResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<GetQuoteResponse*>(&to_msg);
+  auto& from = static_cast<const GetQuoteResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.GetQuoteResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_cost_usd()->::oteldemo::Money::MergeFrom(
+        from._internal_cost_usd());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void GetQuoteResponse::CopyFrom(const GetQuoteResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.GetQuoteResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool GetQuoteResponse::IsInitialized() const {
+  return true;
+}
+
+void GetQuoteResponse::InternalSwap(GetQuoteResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  swap(_impl_.cost_usd_, other->_impl_.cost_usd_);
+}
+
+::google::protobuf::Metadata GetQuoteResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[14]);
+}
+// ===================================================================
+
+class ShipOrderRequest::_Internal {
+ public:
+  using HasBits = decltype(std::declval<ShipOrderRequest>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(ShipOrderRequest, _impl_._has_bits_);
+  static const ::oteldemo::Address& address(const ShipOrderRequest* msg);
+  static void set_has_address(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::Address& ShipOrderRequest::_Internal::address(const ShipOrderRequest* msg) {
+  return *msg->_impl_.address_;
+}
+ShipOrderRequest::ShipOrderRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.ShipOrderRequest)
+}
+ShipOrderRequest::ShipOrderRequest(const ShipOrderRequest& from) : ::google::protobuf::Message() {
+  ShipOrderRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.items_){from._impl_.items_},
+      decltype(_impl_.address_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.address_ = new ::oteldemo::Address(*from._impl_.address_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.ShipOrderRequest)
+}
+inline void ShipOrderRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.items_){arena},
+      decltype(_impl_.address_){nullptr},
+  };
+}
+ShipOrderRequest::~ShipOrderRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.ShipOrderRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void ShipOrderRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.items_.~RepeatedPtrField();
+  if (this != internal_default_instance()) delete _impl_.address_;
+}
+void ShipOrderRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void ShipOrderRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.ShipOrderRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_items()->Clear();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.address_ != nullptr);
+    _impl_.address_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* ShipOrderRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 2, 0, 2> ShipOrderRequest::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(ShipOrderRequest, _impl_._has_bits_),
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    2,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_ShipOrderRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .oteldemo.CartItem items = 2;
+    {::_pbi::TcParser::FastMtR1,
+     {18, 63, 1, PROTOBUF_FIELD_OFFSET(ShipOrderRequest, _impl_.items_)}},
+    // .oteldemo.Address address = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(ShipOrderRequest, _impl_.address_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .oteldemo.Address address = 1;
+    {PROTOBUF_FIELD_OFFSET(ShipOrderRequest, _impl_.address_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // repeated .oteldemo.CartItem items = 2;
+    {PROTOBUF_FIELD_OFFSET(ShipOrderRequest, _impl_.items_), -1, 1,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Address>()},
+    {::_pbi::TcParser::GetTable<::oteldemo::CartItem>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* ShipOrderRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.ShipOrderRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Address address = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::address(this),
+        _Internal::address(this).GetCachedSize(), target, stream);
+  }
+
+  // repeated .oteldemo.CartItem items = 2;
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_items_size()); i < n; i++) {
+    const auto& repfield = this->_internal_items().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(2, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.ShipOrderRequest)
+  return target;
+}
+
+::size_t ShipOrderRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.ShipOrderRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .oteldemo.CartItem items = 2;
+  total_size += 1UL * this->_internal_items_size();
+  for (const auto& msg : this->_internal_items()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  // .oteldemo.Address address = 1;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.address_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ShipOrderRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    ShipOrderRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*ShipOrderRequest::GetClassData() const { return &_class_data_; }
+
+
+void ShipOrderRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ShipOrderRequest*>(&to_msg);
+  auto& from = static_cast<const ShipOrderRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.ShipOrderRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_items()->MergeFrom(from._internal_items());
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_address()->::oteldemo::Address::MergeFrom(
+        from._internal_address());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ShipOrderRequest::CopyFrom(const ShipOrderRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.ShipOrderRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ShipOrderRequest::IsInitialized() const {
+  return true;
+}
+
+void ShipOrderRequest::InternalSwap(ShipOrderRequest* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  _impl_.items_.InternalSwap(&other->_impl_.items_);
+  swap(_impl_.address_, other->_impl_.address_);
+}
+
+::google::protobuf::Metadata ShipOrderRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[15]);
+}
+// ===================================================================
+
+class ShipOrderResponse::_Internal {
+ public:
+};
+
+ShipOrderResponse::ShipOrderResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.ShipOrderResponse)
+}
+ShipOrderResponse::ShipOrderResponse(const ShipOrderResponse& from) : ::google::protobuf::Message() {
+  ShipOrderResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.tracking_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.tracking_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.tracking_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_tracking_id().empty()) {
+    _this->_impl_.tracking_id_.Set(from._internal_tracking_id(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.ShipOrderResponse)
+}
+inline void ShipOrderResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.tracking_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.tracking_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.tracking_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+ShipOrderResponse::~ShipOrderResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.ShipOrderResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void ShipOrderResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.tracking_id_.Destroy();
+}
+void ShipOrderResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void ShipOrderResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.ShipOrderResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.tracking_id_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* ShipOrderResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 46, 2> ShipOrderResponse::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_ShipOrderResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string tracking_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(ShipOrderResponse, _impl_.tracking_id_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string tracking_id = 1;
+    {PROTOBUF_FIELD_OFFSET(ShipOrderResponse, _impl_.tracking_id_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\32\13\0\0\0\0\0\0"
+    "oteldemo.ShipOrderResponse"
+    "tracking_id"
+  }},
+};
+
+::uint8_t* ShipOrderResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.ShipOrderResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string tracking_id = 1;
+  if (!this->_internal_tracking_id().empty()) {
+    const std::string& _s = this->_internal_tracking_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.ShipOrderResponse.tracking_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.ShipOrderResponse)
+  return target;
+}
+
+::size_t ShipOrderResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.ShipOrderResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string tracking_id = 1;
+  if (!this->_internal_tracking_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_tracking_id());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ShipOrderResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    ShipOrderResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*ShipOrderResponse::GetClassData() const { return &_class_data_; }
+
+
+void ShipOrderResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ShipOrderResponse*>(&to_msg);
+  auto& from = static_cast<const ShipOrderResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.ShipOrderResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_tracking_id().empty()) {
+    _this->_internal_set_tracking_id(from._internal_tracking_id());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ShipOrderResponse::CopyFrom(const ShipOrderResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.ShipOrderResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ShipOrderResponse::IsInitialized() const {
+  return true;
+}
+
+void ShipOrderResponse::InternalSwap(ShipOrderResponse* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.tracking_id_, lhs_arena,
+                                       &other->_impl_.tracking_id_, rhs_arena);
+}
+
+::google::protobuf::Metadata ShipOrderResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[16]);
+}
+// ===================================================================
+
+class Address::_Internal {
+ public:
+};
+
+Address::Address(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.Address)
+}
+Address::Address(const Address& from) : ::google::protobuf::Message() {
+  Address* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.street_address_){},
+      decltype(_impl_.city_){},
+      decltype(_impl_.state_){},
+      decltype(_impl_.country_){},
+      decltype(_impl_.zip_code_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.street_address_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.street_address_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_street_address().empty()) {
+    _this->_impl_.street_address_.Set(from._internal_street_address(), _this->GetArenaForAllocation());
+  }
+  _impl_.city_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.city_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_city().empty()) {
+    _this->_impl_.city_.Set(from._internal_city(), _this->GetArenaForAllocation());
+  }
+  _impl_.state_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.state_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_state().empty()) {
+    _this->_impl_.state_.Set(from._internal_state(), _this->GetArenaForAllocation());
+  }
+  _impl_.country_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.country_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_country().empty()) {
+    _this->_impl_.country_.Set(from._internal_country(), _this->GetArenaForAllocation());
+  }
+  _impl_.zip_code_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.zip_code_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_zip_code().empty()) {
+    _this->_impl_.zip_code_.Set(from._internal_zip_code(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.Address)
+}
+inline void Address::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.street_address_){},
+      decltype(_impl_.city_){},
+      decltype(_impl_.state_){},
+      decltype(_impl_.country_){},
+      decltype(_impl_.zip_code_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.street_address_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.street_address_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.city_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.city_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.state_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.state_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.country_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.country_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.zip_code_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.zip_code_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+Address::~Address() {
+  // @@protoc_insertion_point(destructor:oteldemo.Address)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void Address::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.street_address_.Destroy();
+  _impl_.city_.Destroy();
+  _impl_.state_.Destroy();
+  _impl_.country_.Destroy();
+  _impl_.zip_code_.Destroy();
+}
+void Address::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void Address::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.Address)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.street_address_.ClearToEmpty();
+  _impl_.city_.ClearToEmpty();
+  _impl_.state_.ClearToEmpty();
+  _impl_.country_.ClearToEmpty();
+  _impl_.zip_code_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* Address::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<3, 5, 0, 63, 2> Address::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    5, 56,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967264,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    5,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_Address_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    {::_pbi::TcParser::MiniParse, {}},
+    // string street_address = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(Address, _impl_.street_address_)}},
+    // string city = 2;
+    {::_pbi::TcParser::FastUS1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(Address, _impl_.city_)}},
+    // string state = 3;
+    {::_pbi::TcParser::FastUS1,
+     {26, 63, 0, PROTOBUF_FIELD_OFFSET(Address, _impl_.state_)}},
+    // string country = 4;
+    {::_pbi::TcParser::FastUS1,
+     {34, 63, 0, PROTOBUF_FIELD_OFFSET(Address, _impl_.country_)}},
+    // string zip_code = 5;
+    {::_pbi::TcParser::FastUS1,
+     {42, 63, 0, PROTOBUF_FIELD_OFFSET(Address, _impl_.zip_code_)}},
+    {::_pbi::TcParser::MiniParse, {}},
+    {::_pbi::TcParser::MiniParse, {}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string street_address = 1;
+    {PROTOBUF_FIELD_OFFSET(Address, _impl_.street_address_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string city = 2;
+    {PROTOBUF_FIELD_OFFSET(Address, _impl_.city_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string state = 3;
+    {PROTOBUF_FIELD_OFFSET(Address, _impl_.state_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string country = 4;
+    {PROTOBUF_FIELD_OFFSET(Address, _impl_.country_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string zip_code = 5;
+    {PROTOBUF_FIELD_OFFSET(Address, _impl_.zip_code_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\20\16\4\5\7\10\0\0"
+    "oteldemo.Address"
+    "street_address"
+    "city"
+    "state"
+    "country"
+    "zip_code"
+  }},
+};
+
+::uint8_t* Address::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.Address)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string street_address = 1;
+  if (!this->_internal_street_address().empty()) {
+    const std::string& _s = this->_internal_street_address();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Address.street_address");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // string city = 2;
+  if (!this->_internal_city().empty()) {
+    const std::string& _s = this->_internal_city();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Address.city");
+    target = stream->WriteStringMaybeAliased(2, _s, target);
+  }
+
+  // string state = 3;
+  if (!this->_internal_state().empty()) {
+    const std::string& _s = this->_internal_state();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Address.state");
+    target = stream->WriteStringMaybeAliased(3, _s, target);
+  }
+
+  // string country = 4;
+  if (!this->_internal_country().empty()) {
+    const std::string& _s = this->_internal_country();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Address.country");
+    target = stream->WriteStringMaybeAliased(4, _s, target);
+  }
+
+  // string zip_code = 5;
+  if (!this->_internal_zip_code().empty()) {
+    const std::string& _s = this->_internal_zip_code();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Address.zip_code");
+    target = stream->WriteStringMaybeAliased(5, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.Address)
+  return target;
+}
+
+::size_t Address::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.Address)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string street_address = 1;
+  if (!this->_internal_street_address().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_street_address());
+  }
+
+  // string city = 2;
+  if (!this->_internal_city().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_city());
+  }
+
+  // string state = 3;
+  if (!this->_internal_state().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_state());
+  }
+
+  // string country = 4;
+  if (!this->_internal_country().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_country());
+  }
+
+  // string zip_code = 5;
+  if (!this->_internal_zip_code().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_zip_code());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData Address::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    Address::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*Address::GetClassData() const { return &_class_data_; }
+
+
+void Address::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<Address*>(&to_msg);
+  auto& from = static_cast<const Address&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.Address)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_street_address().empty()) {
+    _this->_internal_set_street_address(from._internal_street_address());
+  }
+  if (!from._internal_city().empty()) {
+    _this->_internal_set_city(from._internal_city());
+  }
+  if (!from._internal_state().empty()) {
+    _this->_internal_set_state(from._internal_state());
+  }
+  if (!from._internal_country().empty()) {
+    _this->_internal_set_country(from._internal_country());
+  }
+  if (!from._internal_zip_code().empty()) {
+    _this->_internal_set_zip_code(from._internal_zip_code());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void Address::CopyFrom(const Address& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.Address)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool Address::IsInitialized() const {
+  return true;
+}
+
+void Address::InternalSwap(Address* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.street_address_, lhs_arena,
+                                       &other->_impl_.street_address_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.city_, lhs_arena,
+                                       &other->_impl_.city_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.state_, lhs_arena,
+                                       &other->_impl_.state_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.country_, lhs_arena,
+                                       &other->_impl_.country_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.zip_code_, lhs_arena,
+                                       &other->_impl_.zip_code_, rhs_arena);
+}
+
+::google::protobuf::Metadata Address::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[17]);
+}
+// ===================================================================
+
+class Money::_Internal {
+ public:
+};
+
+Money::Money(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.Money)
+}
+Money::Money(const Money& from) : ::google::protobuf::Message() {
+  Money* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.currency_code_){},
+      decltype(_impl_.units_){},
+      decltype(_impl_.nanos_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.currency_code_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.currency_code_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_currency_code().empty()) {
+    _this->_impl_.currency_code_.Set(from._internal_currency_code(), _this->GetArenaForAllocation());
+  }
+  ::memcpy(&_impl_.units_, &from._impl_.units_,
+    static_cast<::size_t>(reinterpret_cast<char*>(&_impl_.nanos_) -
+    reinterpret_cast<char*>(&_impl_.units_)) + sizeof(_impl_.nanos_));
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.Money)
+}
+inline void Money::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.currency_code_){},
+      decltype(_impl_.units_){::int64_t{0}},
+      decltype(_impl_.nanos_){0},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.currency_code_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.currency_code_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+Money::~Money() {
+  // @@protoc_insertion_point(destructor:oteldemo.Money)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void Money::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.currency_code_.Destroy();
+}
+void Money::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void Money::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.Money)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.currency_code_.ClearToEmpty();
+  ::memset(&_impl_.units_, 0, static_cast<::size_t>(
+      reinterpret_cast<char*>(&_impl_.nanos_) -
+      reinterpret_cast<char*>(&_impl_.units_)) + sizeof(_impl_.nanos_));
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* Money::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<2, 3, 0, 36, 2> Money::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    3, 24,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967288,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    3,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_Money_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    {::_pbi::TcParser::MiniParse, {}},
+    // string currency_code = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(Money, _impl_.currency_code_)}},
+    // int64 units = 2;
+    {::_pbi::TcParser::SingularVarintNoZag1<::uint64_t, offsetof(Money, _impl_.units_), 63>(),
+     {16, 63, 0, PROTOBUF_FIELD_OFFSET(Money, _impl_.units_)}},
+    // int32 nanos = 3;
+    {::_pbi::TcParser::SingularVarintNoZag1<::uint32_t, offsetof(Money, _impl_.nanos_), 63>(),
+     {24, 63, 0, PROTOBUF_FIELD_OFFSET(Money, _impl_.nanos_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string currency_code = 1;
+    {PROTOBUF_FIELD_OFFSET(Money, _impl_.currency_code_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // int64 units = 2;
+    {PROTOBUF_FIELD_OFFSET(Money, _impl_.units_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kInt64)},
+    // int32 nanos = 3;
+    {PROTOBUF_FIELD_OFFSET(Money, _impl_.nanos_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kInt32)},
+  }},
+  // no aux_entries
+  {{
+    "\16\15\0\0\0\0\0\0"
+    "oteldemo.Money"
+    "currency_code"
+  }},
+};
+
+::uint8_t* Money::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.Money)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string currency_code = 1;
+  if (!this->_internal_currency_code().empty()) {
+    const std::string& _s = this->_internal_currency_code();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Money.currency_code");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // int64 units = 2;
+  if (this->_internal_units() != 0) {
+    target = ::google::protobuf::internal::WireFormatLite::
+        WriteInt64ToArrayWithField<2>(
+            stream, this->_internal_units(), target);
+  }
+
+  // int32 nanos = 3;
+  if (this->_internal_nanos() != 0) {
+    target = ::google::protobuf::internal::WireFormatLite::
+        WriteInt32ToArrayWithField<3>(
+            stream, this->_internal_nanos(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.Money)
+  return target;
+}
+
+::size_t Money::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.Money)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string currency_code = 1;
+  if (!this->_internal_currency_code().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_currency_code());
+  }
+
+  // int64 units = 2;
+  if (this->_internal_units() != 0) {
+    total_size += ::_pbi::WireFormatLite::Int64SizePlusOne(
+        this->_internal_units());
+  }
+
+  // int32 nanos = 3;
+  if (this->_internal_nanos() != 0) {
+    total_size += ::_pbi::WireFormatLite::Int32SizePlusOne(
+        this->_internal_nanos());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData Money::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    Money::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*Money::GetClassData() const { return &_class_data_; }
+
+
+void Money::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<Money*>(&to_msg);
+  auto& from = static_cast<const Money&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.Money)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_currency_code().empty()) {
+    _this->_internal_set_currency_code(from._internal_currency_code());
+  }
+  if (from._internal_units() != 0) {
+    _this->_internal_set_units(from._internal_units());
+  }
+  if (from._internal_nanos() != 0) {
+    _this->_internal_set_nanos(from._internal_nanos());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void Money::CopyFrom(const Money& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.Money)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool Money::IsInitialized() const {
+  return true;
+}
+
+void Money::InternalSwap(Money* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.currency_code_, lhs_arena,
+                                       &other->_impl_.currency_code_, rhs_arena);
+  ::google::protobuf::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(Money, _impl_.nanos_)
+      + sizeof(Money::_impl_.nanos_)
+      - PROTOBUF_FIELD_OFFSET(Money, _impl_.units_)>(
+          reinterpret_cast<char*>(&_impl_.units_),
+          reinterpret_cast<char*>(&other->_impl_.units_));
+}
+
+::google::protobuf::Metadata Money::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[18]);
+}
+// ===================================================================
+
+class GetSupportedCurrenciesResponse::_Internal {
+ public:
+};
+
+GetSupportedCurrenciesResponse::GetSupportedCurrenciesResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.GetSupportedCurrenciesResponse)
+}
+GetSupportedCurrenciesResponse::GetSupportedCurrenciesResponse(const GetSupportedCurrenciesResponse& from) : ::google::protobuf::Message() {
+  GetSupportedCurrenciesResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.currency_codes_){from._impl_.currency_codes_},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.GetSupportedCurrenciesResponse)
+}
+inline void GetSupportedCurrenciesResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.currency_codes_){arena},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+}
+GetSupportedCurrenciesResponse::~GetSupportedCurrenciesResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.GetSupportedCurrenciesResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void GetSupportedCurrenciesResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _internal_mutable_currency_codes()->~RepeatedPtrField();
+}
+void GetSupportedCurrenciesResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void GetSupportedCurrenciesResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.GetSupportedCurrenciesResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_currency_codes()->Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* GetSupportedCurrenciesResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 62, 2> GetSupportedCurrenciesResponse::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_GetSupportedCurrenciesResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated string currency_codes = 1;
+    {::_pbi::TcParser::FastUR1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(GetSupportedCurrenciesResponse, _impl_.currency_codes_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // repeated string currency_codes = 1;
+    {PROTOBUF_FIELD_OFFSET(GetSupportedCurrenciesResponse, _impl_.currency_codes_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kUtf8String | ::_fl::kRepSString)},
+  }},
+  // no aux_entries
+  {{
+    "\47\16\0\0\0\0\0\0"
+    "oteldemo.GetSupportedCurrenciesResponse"
+    "currency_codes"
+  }},
+};
+
+::uint8_t* GetSupportedCurrenciesResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.GetSupportedCurrenciesResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // repeated string currency_codes = 1;
+  for (int i = 0, n = this->_internal_currency_codes_size(); i < n; ++i) {
+    const auto& s = this->_internal_currency_codes().Get(i);
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        s.data(), static_cast<int>(s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.GetSupportedCurrenciesResponse.currency_codes");
+    target = stream->WriteString(1, s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.GetSupportedCurrenciesResponse)
+  return target;
+}
+
+::size_t GetSupportedCurrenciesResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.GetSupportedCurrenciesResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated string currency_codes = 1;
+  total_size += 1 * ::google::protobuf::internal::FromIntSize(_internal_currency_codes().size());
+  for (int i = 0, n = _internal_currency_codes().size(); i < n; ++i) {
+    total_size += ::google::protobuf::internal::WireFormatLite::StringSize(
+        _internal_currency_codes().Get(i));
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData GetSupportedCurrenciesResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    GetSupportedCurrenciesResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*GetSupportedCurrenciesResponse::GetClassData() const { return &_class_data_; }
+
+
+void GetSupportedCurrenciesResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<GetSupportedCurrenciesResponse*>(&to_msg);
+  auto& from = static_cast<const GetSupportedCurrenciesResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.GetSupportedCurrenciesResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_currency_codes()->MergeFrom(from._internal_currency_codes());
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void GetSupportedCurrenciesResponse::CopyFrom(const GetSupportedCurrenciesResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.GetSupportedCurrenciesResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool GetSupportedCurrenciesResponse::IsInitialized() const {
+  return true;
+}
+
+void GetSupportedCurrenciesResponse::InternalSwap(GetSupportedCurrenciesResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.currency_codes_.InternalSwap(&other->_impl_.currency_codes_);
+}
+
+::google::protobuf::Metadata GetSupportedCurrenciesResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[19]);
+}
+// ===================================================================
+
+class CurrencyConversionRequest::_Internal {
+ public:
+  using HasBits = decltype(std::declval<CurrencyConversionRequest>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(CurrencyConversionRequest, _impl_._has_bits_);
+  static const ::oteldemo::Money& from(const CurrencyConversionRequest* msg);
+  static void set_has_from(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::Money& CurrencyConversionRequest::_Internal::from(const CurrencyConversionRequest* msg) {
+  return *msg->_impl_.from_;
+}
+CurrencyConversionRequest::CurrencyConversionRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.CurrencyConversionRequest)
+}
+CurrencyConversionRequest::CurrencyConversionRequest(const CurrencyConversionRequest& from) : ::google::protobuf::Message() {
+  CurrencyConversionRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.to_code_){},
+      decltype(_impl_.from_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.to_code_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.to_code_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_to_code().empty()) {
+    _this->_impl_.to_code_.Set(from._internal_to_code(), _this->GetArenaForAllocation());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.from_ = new ::oteldemo::Money(*from._impl_.from_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.CurrencyConversionRequest)
+}
+inline void CurrencyConversionRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.to_code_){},
+      decltype(_impl_.from_){nullptr},
+  };
+  _impl_.to_code_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.to_code_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+CurrencyConversionRequest::~CurrencyConversionRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.CurrencyConversionRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void CurrencyConversionRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.to_code_.Destroy();
+  if (this != internal_default_instance()) delete _impl_.from_;
+}
+void CurrencyConversionRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void CurrencyConversionRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.CurrencyConversionRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.to_code_.ClearToEmpty();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.from_ != nullptr);
+    _impl_.from_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* CurrencyConversionRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 1, 50, 2> CurrencyConversionRequest::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(CurrencyConversionRequest, _impl_._has_bits_),
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_CurrencyConversionRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string to_code = 2;
+    {::_pbi::TcParser::FastUS1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(CurrencyConversionRequest, _impl_.to_code_)}},
+    // .oteldemo.Money from = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(CurrencyConversionRequest, _impl_.from_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .oteldemo.Money from = 1;
+    {PROTOBUF_FIELD_OFFSET(CurrencyConversionRequest, _impl_.from_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // string to_code = 2;
+    {PROTOBUF_FIELD_OFFSET(CurrencyConversionRequest, _impl_.to_code_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Money>()},
+  }}, {{
+    "\42\0\7\0\0\0\0\0"
+    "oteldemo.CurrencyConversionRequest"
+    "to_code"
+  }},
+};
+
+::uint8_t* CurrencyConversionRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.CurrencyConversionRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Money from = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::from(this),
+        _Internal::from(this).GetCachedSize(), target, stream);
+  }
+
+  // string to_code = 2;
+  if (!this->_internal_to_code().empty()) {
+    const std::string& _s = this->_internal_to_code();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.CurrencyConversionRequest.to_code");
+    target = stream->WriteStringMaybeAliased(2, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.CurrencyConversionRequest)
+  return target;
+}
+
+::size_t CurrencyConversionRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.CurrencyConversionRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string to_code = 2;
+  if (!this->_internal_to_code().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_to_code());
+  }
+
+  // .oteldemo.Money from = 1;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.from_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData CurrencyConversionRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    CurrencyConversionRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*CurrencyConversionRequest::GetClassData() const { return &_class_data_; }
+
+
+void CurrencyConversionRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<CurrencyConversionRequest*>(&to_msg);
+  auto& from = static_cast<const CurrencyConversionRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.CurrencyConversionRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_to_code().empty()) {
+    _this->_internal_set_to_code(from._internal_to_code());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_from()->::oteldemo::Money::MergeFrom(
+        from._internal_from());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void CurrencyConversionRequest::CopyFrom(const CurrencyConversionRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.CurrencyConversionRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool CurrencyConversionRequest::IsInitialized() const {
+  return true;
+}
+
+void CurrencyConversionRequest::InternalSwap(CurrencyConversionRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.to_code_, lhs_arena,
+                                       &other->_impl_.to_code_, rhs_arena);
+  swap(_impl_.from_, other->_impl_.from_);
+}
+
+::google::protobuf::Metadata CurrencyConversionRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[20]);
+}
+// ===================================================================
+
+class CreditCardInfo::_Internal {
+ public:
+};
+
+CreditCardInfo::CreditCardInfo(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.CreditCardInfo)
+}
+CreditCardInfo::CreditCardInfo(const CreditCardInfo& from) : ::google::protobuf::Message() {
+  CreditCardInfo* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.credit_card_number_){},
+      decltype(_impl_.credit_card_cvv_){},
+      decltype(_impl_.credit_card_expiration_year_){},
+      decltype(_impl_.credit_card_expiration_month_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.credit_card_number_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.credit_card_number_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_credit_card_number().empty()) {
+    _this->_impl_.credit_card_number_.Set(from._internal_credit_card_number(), _this->GetArenaForAllocation());
+  }
+  ::memcpy(&_impl_.credit_card_cvv_, &from._impl_.credit_card_cvv_,
+    static_cast<::size_t>(reinterpret_cast<char*>(&_impl_.credit_card_expiration_month_) -
+    reinterpret_cast<char*>(&_impl_.credit_card_cvv_)) + sizeof(_impl_.credit_card_expiration_month_));
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.CreditCardInfo)
+}
+inline void CreditCardInfo::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.credit_card_number_){},
+      decltype(_impl_.credit_card_cvv_){0},
+      decltype(_impl_.credit_card_expiration_year_){0},
+      decltype(_impl_.credit_card_expiration_month_){0},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.credit_card_number_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.credit_card_number_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+CreditCardInfo::~CreditCardInfo() {
+  // @@protoc_insertion_point(destructor:oteldemo.CreditCardInfo)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void CreditCardInfo::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.credit_card_number_.Destroy();
+}
+void CreditCardInfo::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void CreditCardInfo::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.CreditCardInfo)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.credit_card_number_.ClearToEmpty();
+  ::memset(&_impl_.credit_card_cvv_, 0, static_cast<::size_t>(
+      reinterpret_cast<char*>(&_impl_.credit_card_expiration_month_) -
+      reinterpret_cast<char*>(&_impl_.credit_card_cvv_)) + sizeof(_impl_.credit_card_expiration_month_));
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* CreditCardInfo::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<2, 4, 0, 50, 2> CreditCardInfo::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    4, 24,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967280,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    4,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_CreditCardInfo_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // int32 credit_card_expiration_month = 4;
+    {::_pbi::TcParser::SingularVarintNoZag1<::uint32_t, offsetof(CreditCardInfo, _impl_.credit_card_expiration_month_), 63>(),
+     {32, 63, 0, PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_expiration_month_)}},
+    // string credit_card_number = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_number_)}},
+    // int32 credit_card_cvv = 2;
+    {::_pbi::TcParser::SingularVarintNoZag1<::uint32_t, offsetof(CreditCardInfo, _impl_.credit_card_cvv_), 63>(),
+     {16, 63, 0, PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_cvv_)}},
+    // int32 credit_card_expiration_year = 3;
+    {::_pbi::TcParser::SingularVarintNoZag1<::uint32_t, offsetof(CreditCardInfo, _impl_.credit_card_expiration_year_), 63>(),
+     {24, 63, 0, PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_expiration_year_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string credit_card_number = 1;
+    {PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_number_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // int32 credit_card_cvv = 2;
+    {PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_cvv_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kInt32)},
+    // int32 credit_card_expiration_year = 3;
+    {PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_expiration_year_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kInt32)},
+    // int32 credit_card_expiration_month = 4;
+    {PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_expiration_month_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kInt32)},
+  }},
+  // no aux_entries
+  {{
+    "\27\22\0\0\0\0\0\0"
+    "oteldemo.CreditCardInfo"
+    "credit_card_number"
+  }},
+};
+
+::uint8_t* CreditCardInfo::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.CreditCardInfo)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string credit_card_number = 1;
+  if (!this->_internal_credit_card_number().empty()) {
+    const std::string& _s = this->_internal_credit_card_number();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.CreditCardInfo.credit_card_number");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // int32 credit_card_cvv = 2;
+  if (this->_internal_credit_card_cvv() != 0) {
+    target = ::google::protobuf::internal::WireFormatLite::
+        WriteInt32ToArrayWithField<2>(
+            stream, this->_internal_credit_card_cvv(), target);
+  }
+
+  // int32 credit_card_expiration_year = 3;
+  if (this->_internal_credit_card_expiration_year() != 0) {
+    target = ::google::protobuf::internal::WireFormatLite::
+        WriteInt32ToArrayWithField<3>(
+            stream, this->_internal_credit_card_expiration_year(), target);
+  }
+
+  // int32 credit_card_expiration_month = 4;
+  if (this->_internal_credit_card_expiration_month() != 0) {
+    target = ::google::protobuf::internal::WireFormatLite::
+        WriteInt32ToArrayWithField<4>(
+            stream, this->_internal_credit_card_expiration_month(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.CreditCardInfo)
+  return target;
+}
+
+::size_t CreditCardInfo::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.CreditCardInfo)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string credit_card_number = 1;
+  if (!this->_internal_credit_card_number().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_credit_card_number());
+  }
+
+  // int32 credit_card_cvv = 2;
+  if (this->_internal_credit_card_cvv() != 0) {
+    total_size += ::_pbi::WireFormatLite::Int32SizePlusOne(
+        this->_internal_credit_card_cvv());
+  }
+
+  // int32 credit_card_expiration_year = 3;
+  if (this->_internal_credit_card_expiration_year() != 0) {
+    total_size += ::_pbi::WireFormatLite::Int32SizePlusOne(
+        this->_internal_credit_card_expiration_year());
+  }
+
+  // int32 credit_card_expiration_month = 4;
+  if (this->_internal_credit_card_expiration_month() != 0) {
+    total_size += ::_pbi::WireFormatLite::Int32SizePlusOne(
+        this->_internal_credit_card_expiration_month());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData CreditCardInfo::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    CreditCardInfo::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*CreditCardInfo::GetClassData() const { return &_class_data_; }
+
+
+void CreditCardInfo::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<CreditCardInfo*>(&to_msg);
+  auto& from = static_cast<const CreditCardInfo&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.CreditCardInfo)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_credit_card_number().empty()) {
+    _this->_internal_set_credit_card_number(from._internal_credit_card_number());
+  }
+  if (from._internal_credit_card_cvv() != 0) {
+    _this->_internal_set_credit_card_cvv(from._internal_credit_card_cvv());
+  }
+  if (from._internal_credit_card_expiration_year() != 0) {
+    _this->_internal_set_credit_card_expiration_year(from._internal_credit_card_expiration_year());
+  }
+  if (from._internal_credit_card_expiration_month() != 0) {
+    _this->_internal_set_credit_card_expiration_month(from._internal_credit_card_expiration_month());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void CreditCardInfo::CopyFrom(const CreditCardInfo& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.CreditCardInfo)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool CreditCardInfo::IsInitialized() const {
+  return true;
+}
+
+void CreditCardInfo::InternalSwap(CreditCardInfo* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.credit_card_number_, lhs_arena,
+                                       &other->_impl_.credit_card_number_, rhs_arena);
+  ::google::protobuf::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_expiration_month_)
+      + sizeof(CreditCardInfo::_impl_.credit_card_expiration_month_)
+      - PROTOBUF_FIELD_OFFSET(CreditCardInfo, _impl_.credit_card_cvv_)>(
+          reinterpret_cast<char*>(&_impl_.credit_card_cvv_),
+          reinterpret_cast<char*>(&other->_impl_.credit_card_cvv_));
+}
+
+::google::protobuf::Metadata CreditCardInfo::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[21]);
+}
+// ===================================================================
+
+class ChargeRequest::_Internal {
+ public:
+  using HasBits = decltype(std::declval<ChargeRequest>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(ChargeRequest, _impl_._has_bits_);
+  static const ::oteldemo::Money& amount(const ChargeRequest* msg);
+  static void set_has_amount(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+  static const ::oteldemo::CreditCardInfo& credit_card(const ChargeRequest* msg);
+  static void set_has_credit_card(HasBits* has_bits) {
+    (*has_bits)[0] |= 2u;
+  }
+};
+
+const ::oteldemo::Money& ChargeRequest::_Internal::amount(const ChargeRequest* msg) {
+  return *msg->_impl_.amount_;
+}
+const ::oteldemo::CreditCardInfo& ChargeRequest::_Internal::credit_card(const ChargeRequest* msg) {
+  return *msg->_impl_.credit_card_;
+}
+ChargeRequest::ChargeRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.ChargeRequest)
+}
+ChargeRequest::ChargeRequest(const ChargeRequest& from) : ::google::protobuf::Message() {
+  ChargeRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.amount_){nullptr},
+      decltype(_impl_.credit_card_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.amount_ = new ::oteldemo::Money(*from._impl_.amount_);
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000002u) != 0) {
+    _this->_impl_.credit_card_ = new ::oteldemo::CreditCardInfo(*from._impl_.credit_card_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.ChargeRequest)
+}
+inline void ChargeRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.amount_){nullptr},
+      decltype(_impl_.credit_card_){nullptr},
+  };
+}
+ChargeRequest::~ChargeRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.ChargeRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void ChargeRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.amount_;
+  if (this != internal_default_instance()) delete _impl_.credit_card_;
+}
+void ChargeRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void ChargeRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.ChargeRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      ABSL_DCHECK(_impl_.amount_ != nullptr);
+      _impl_.amount_->Clear();
+    }
+    if (cached_has_bits & 0x00000002u) {
+      ABSL_DCHECK(_impl_.credit_card_ != nullptr);
+      _impl_.credit_card_->Clear();
+    }
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* ChargeRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 2, 0, 2> ChargeRequest::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(ChargeRequest, _impl_._has_bits_),
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    2,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_ChargeRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .oteldemo.CreditCardInfo credit_card = 2;
+    {::_pbi::TcParser::FastMtS1,
+     {18, 1, 1, PROTOBUF_FIELD_OFFSET(ChargeRequest, _impl_.credit_card_)}},
+    // .oteldemo.Money amount = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(ChargeRequest, _impl_.amount_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .oteldemo.Money amount = 1;
+    {PROTOBUF_FIELD_OFFSET(ChargeRequest, _impl_.amount_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // .oteldemo.CreditCardInfo credit_card = 2;
+    {PROTOBUF_FIELD_OFFSET(ChargeRequest, _impl_.credit_card_), _Internal::kHasBitsOffset + 1, 1,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Money>()},
+    {::_pbi::TcParser::GetTable<::oteldemo::CreditCardInfo>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* ChargeRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.ChargeRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Money amount = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::amount(this),
+        _Internal::amount(this).GetCachedSize(), target, stream);
+  }
+
+  // .oteldemo.CreditCardInfo credit_card = 2;
+  if (cached_has_bits & 0x00000002u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(2, _Internal::credit_card(this),
+        _Internal::credit_card(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.ChargeRequest)
+  return target;
+}
+
+::size_t ChargeRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.ChargeRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    // .oteldemo.Money amount = 1;
+    if (cached_has_bits & 0x00000001u) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *_impl_.amount_);
+    }
+
+    // .oteldemo.CreditCardInfo credit_card = 2;
+    if (cached_has_bits & 0x00000002u) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *_impl_.credit_card_);
+    }
+
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ChargeRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    ChargeRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*ChargeRequest::GetClassData() const { return &_class_data_; }
+
+
+void ChargeRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ChargeRequest*>(&to_msg);
+  auto& from = static_cast<const ChargeRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.ChargeRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  cached_has_bits = from._impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      _this->_internal_mutable_amount()->::oteldemo::Money::MergeFrom(
+          from._internal_amount());
+    }
+    if (cached_has_bits & 0x00000002u) {
+      _this->_internal_mutable_credit_card()->::oteldemo::CreditCardInfo::MergeFrom(
+          from._internal_credit_card());
+    }
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ChargeRequest::CopyFrom(const ChargeRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.ChargeRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ChargeRequest::IsInitialized() const {
+  return true;
+}
+
+void ChargeRequest::InternalSwap(ChargeRequest* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  ::google::protobuf::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(ChargeRequest, _impl_.credit_card_)
+      + sizeof(ChargeRequest::_impl_.credit_card_)
+      - PROTOBUF_FIELD_OFFSET(ChargeRequest, _impl_.amount_)>(
+          reinterpret_cast<char*>(&_impl_.amount_),
+          reinterpret_cast<char*>(&other->_impl_.amount_));
+}
+
+::google::protobuf::Metadata ChargeRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[22]);
+}
+// ===================================================================
+
+class ChargeResponse::_Internal {
+ public:
+};
+
+ChargeResponse::ChargeResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.ChargeResponse)
+}
+ChargeResponse::ChargeResponse(const ChargeResponse& from) : ::google::protobuf::Message() {
+  ChargeResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.transaction_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.transaction_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.transaction_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_transaction_id().empty()) {
+    _this->_impl_.transaction_id_.Set(from._internal_transaction_id(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.ChargeResponse)
+}
+inline void ChargeResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.transaction_id_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.transaction_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.transaction_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+ChargeResponse::~ChargeResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.ChargeResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void ChargeResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.transaction_id_.Destroy();
+}
+void ChargeResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void ChargeResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.ChargeResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.transaction_id_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* ChargeResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 46, 2> ChargeResponse::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_ChargeResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string transaction_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(ChargeResponse, _impl_.transaction_id_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string transaction_id = 1;
+    {PROTOBUF_FIELD_OFFSET(ChargeResponse, _impl_.transaction_id_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\27\16\0\0\0\0\0\0"
+    "oteldemo.ChargeResponse"
+    "transaction_id"
+  }},
+};
+
+::uint8_t* ChargeResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.ChargeResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string transaction_id = 1;
+  if (!this->_internal_transaction_id().empty()) {
+    const std::string& _s = this->_internal_transaction_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.ChargeResponse.transaction_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.ChargeResponse)
+  return target;
+}
+
+::size_t ChargeResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.ChargeResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string transaction_id = 1;
+  if (!this->_internal_transaction_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_transaction_id());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ChargeResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    ChargeResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*ChargeResponse::GetClassData() const { return &_class_data_; }
+
+
+void ChargeResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ChargeResponse*>(&to_msg);
+  auto& from = static_cast<const ChargeResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.ChargeResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_transaction_id().empty()) {
+    _this->_internal_set_transaction_id(from._internal_transaction_id());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ChargeResponse::CopyFrom(const ChargeResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.ChargeResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ChargeResponse::IsInitialized() const {
+  return true;
+}
+
+void ChargeResponse::InternalSwap(ChargeResponse* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.transaction_id_, lhs_arena,
+                                       &other->_impl_.transaction_id_, rhs_arena);
+}
+
+::google::protobuf::Metadata ChargeResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[23]);
+}
+// ===================================================================
+
+class OrderItem::_Internal {
+ public:
+  using HasBits = decltype(std::declval<OrderItem>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(OrderItem, _impl_._has_bits_);
+  static const ::oteldemo::CartItem& item(const OrderItem* msg);
+  static void set_has_item(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+  static const ::oteldemo::Money& cost(const OrderItem* msg);
+  static void set_has_cost(HasBits* has_bits) {
+    (*has_bits)[0] |= 2u;
+  }
+};
+
+const ::oteldemo::CartItem& OrderItem::_Internal::item(const OrderItem* msg) {
+  return *msg->_impl_.item_;
+}
+const ::oteldemo::Money& OrderItem::_Internal::cost(const OrderItem* msg) {
+  return *msg->_impl_.cost_;
+}
+OrderItem::OrderItem(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.OrderItem)
+}
+OrderItem::OrderItem(const OrderItem& from) : ::google::protobuf::Message() {
+  OrderItem* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.item_){nullptr},
+      decltype(_impl_.cost_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.item_ = new ::oteldemo::CartItem(*from._impl_.item_);
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000002u) != 0) {
+    _this->_impl_.cost_ = new ::oteldemo::Money(*from._impl_.cost_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.OrderItem)
+}
+inline void OrderItem::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.item_){nullptr},
+      decltype(_impl_.cost_){nullptr},
+  };
+}
+OrderItem::~OrderItem() {
+  // @@protoc_insertion_point(destructor:oteldemo.OrderItem)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void OrderItem::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.item_;
+  if (this != internal_default_instance()) delete _impl_.cost_;
+}
+void OrderItem::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void OrderItem::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.OrderItem)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      ABSL_DCHECK(_impl_.item_ != nullptr);
+      _impl_.item_->Clear();
+    }
+    if (cached_has_bits & 0x00000002u) {
+      ABSL_DCHECK(_impl_.cost_ != nullptr);
+      _impl_.cost_->Clear();
+    }
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* OrderItem::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 2, 0, 2> OrderItem::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(OrderItem, _impl_._has_bits_),
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    2,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_OrderItem_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .oteldemo.Money cost = 2;
+    {::_pbi::TcParser::FastMtS1,
+     {18, 1, 1, PROTOBUF_FIELD_OFFSET(OrderItem, _impl_.cost_)}},
+    // .oteldemo.CartItem item = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(OrderItem, _impl_.item_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .oteldemo.CartItem item = 1;
+    {PROTOBUF_FIELD_OFFSET(OrderItem, _impl_.item_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // .oteldemo.Money cost = 2;
+    {PROTOBUF_FIELD_OFFSET(OrderItem, _impl_.cost_), _Internal::kHasBitsOffset + 1, 1,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::CartItem>()},
+    {::_pbi::TcParser::GetTable<::oteldemo::Money>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* OrderItem::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.OrderItem)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.CartItem item = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::item(this),
+        _Internal::item(this).GetCachedSize(), target, stream);
+  }
+
+  // .oteldemo.Money cost = 2;
+  if (cached_has_bits & 0x00000002u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(2, _Internal::cost(this),
+        _Internal::cost(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.OrderItem)
+  return target;
+}
+
+::size_t OrderItem::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.OrderItem)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    // .oteldemo.CartItem item = 1;
+    if (cached_has_bits & 0x00000001u) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *_impl_.item_);
+    }
+
+    // .oteldemo.Money cost = 2;
+    if (cached_has_bits & 0x00000002u) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *_impl_.cost_);
+    }
+
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData OrderItem::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    OrderItem::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*OrderItem::GetClassData() const { return &_class_data_; }
+
+
+void OrderItem::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<OrderItem*>(&to_msg);
+  auto& from = static_cast<const OrderItem&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.OrderItem)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  cached_has_bits = from._impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      _this->_internal_mutable_item()->::oteldemo::CartItem::MergeFrom(
+          from._internal_item());
+    }
+    if (cached_has_bits & 0x00000002u) {
+      _this->_internal_mutable_cost()->::oteldemo::Money::MergeFrom(
+          from._internal_cost());
+    }
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void OrderItem::CopyFrom(const OrderItem& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.OrderItem)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool OrderItem::IsInitialized() const {
+  return true;
+}
+
+void OrderItem::InternalSwap(OrderItem* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  ::google::protobuf::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(OrderItem, _impl_.cost_)
+      + sizeof(OrderItem::_impl_.cost_)
+      - PROTOBUF_FIELD_OFFSET(OrderItem, _impl_.item_)>(
+          reinterpret_cast<char*>(&_impl_.item_),
+          reinterpret_cast<char*>(&other->_impl_.item_));
+}
+
+::google::protobuf::Metadata OrderItem::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[24]);
+}
+// ===================================================================
+
+class OrderResult::_Internal {
+ public:
+  using HasBits = decltype(std::declval<OrderResult>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(OrderResult, _impl_._has_bits_);
+  static const ::oteldemo::Money& shipping_cost(const OrderResult* msg);
+  static void set_has_shipping_cost(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+  static const ::oteldemo::Address& shipping_address(const OrderResult* msg);
+  static void set_has_shipping_address(HasBits* has_bits) {
+    (*has_bits)[0] |= 2u;
+  }
+};
+
+const ::oteldemo::Money& OrderResult::_Internal::shipping_cost(const OrderResult* msg) {
+  return *msg->_impl_.shipping_cost_;
+}
+const ::oteldemo::Address& OrderResult::_Internal::shipping_address(const OrderResult* msg) {
+  return *msg->_impl_.shipping_address_;
+}
+OrderResult::OrderResult(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.OrderResult)
+}
+OrderResult::OrderResult(const OrderResult& from) : ::google::protobuf::Message() {
+  OrderResult* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.items_){from._impl_.items_},
+      decltype(_impl_.order_id_){},
+      decltype(_impl_.shipping_tracking_id_){},
+      decltype(_impl_.shipping_cost_){nullptr},
+      decltype(_impl_.shipping_address_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.order_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.order_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_order_id().empty()) {
+    _this->_impl_.order_id_.Set(from._internal_order_id(), _this->GetArenaForAllocation());
+  }
+  _impl_.shipping_tracking_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.shipping_tracking_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_shipping_tracking_id().empty()) {
+    _this->_impl_.shipping_tracking_id_.Set(from._internal_shipping_tracking_id(), _this->GetArenaForAllocation());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.shipping_cost_ = new ::oteldemo::Money(*from._impl_.shipping_cost_);
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000002u) != 0) {
+    _this->_impl_.shipping_address_ = new ::oteldemo::Address(*from._impl_.shipping_address_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.OrderResult)
+}
+inline void OrderResult::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.items_){arena},
+      decltype(_impl_.order_id_){},
+      decltype(_impl_.shipping_tracking_id_){},
+      decltype(_impl_.shipping_cost_){nullptr},
+      decltype(_impl_.shipping_address_){nullptr},
+  };
+  _impl_.order_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.order_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.shipping_tracking_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.shipping_tracking_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+OrderResult::~OrderResult() {
+  // @@protoc_insertion_point(destructor:oteldemo.OrderResult)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void OrderResult::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.items_.~RepeatedPtrField();
+  _impl_.order_id_.Destroy();
+  _impl_.shipping_tracking_id_.Destroy();
+  if (this != internal_default_instance()) delete _impl_.shipping_cost_;
+  if (this != internal_default_instance()) delete _impl_.shipping_address_;
+}
+void OrderResult::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void OrderResult::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.OrderResult)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_items()->Clear();
+  _impl_.order_id_.ClearToEmpty();
+  _impl_.shipping_tracking_id_.ClearToEmpty();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      ABSL_DCHECK(_impl_.shipping_cost_ != nullptr);
+      _impl_.shipping_cost_->Clear();
+    }
+    if (cached_has_bits & 0x00000002u) {
+      ABSL_DCHECK(_impl_.shipping_address_ != nullptr);
+      _impl_.shipping_address_->Clear();
+    }
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* OrderResult::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<3, 5, 3, 57, 2> OrderResult::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(OrderResult, _impl_._has_bits_),
+    0, // no _extensions_
+    5, 56,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967264,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    5,  // num_field_entries
+    3,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_OrderResult_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    {::_pbi::TcParser::MiniParse, {}},
+    // string order_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.order_id_)}},
+    // string shipping_tracking_id = 2;
+    {::_pbi::TcParser::FastUS1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.shipping_tracking_id_)}},
+    // .oteldemo.Money shipping_cost = 3;
+    {::_pbi::TcParser::FastMtS1,
+     {26, 0, 0, PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.shipping_cost_)}},
+    // .oteldemo.Address shipping_address = 4;
+    {::_pbi::TcParser::FastMtS1,
+     {34, 1, 1, PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.shipping_address_)}},
+    // repeated .oteldemo.OrderItem items = 5;
+    {::_pbi::TcParser::FastMtR1,
+     {42, 63, 2, PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.items_)}},
+    {::_pbi::TcParser::MiniParse, {}},
+    {::_pbi::TcParser::MiniParse, {}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string order_id = 1;
+    {PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.order_id_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string shipping_tracking_id = 2;
+    {PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.shipping_tracking_id_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // .oteldemo.Money shipping_cost = 3;
+    {PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.shipping_cost_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // .oteldemo.Address shipping_address = 4;
+    {PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.shipping_address_), _Internal::kHasBitsOffset + 1, 1,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // repeated .oteldemo.OrderItem items = 5;
+    {PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.items_), -1, 2,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Money>()},
+    {::_pbi::TcParser::GetTable<::oteldemo::Address>()},
+    {::_pbi::TcParser::GetTable<::oteldemo::OrderItem>()},
+  }}, {{
+    "\24\10\24\0\0\0\0\0"
+    "oteldemo.OrderResult"
+    "order_id"
+    "shipping_tracking_id"
+  }},
+};
+
+::uint8_t* OrderResult::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.OrderResult)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string order_id = 1;
+  if (!this->_internal_order_id().empty()) {
+    const std::string& _s = this->_internal_order_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.OrderResult.order_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // string shipping_tracking_id = 2;
+  if (!this->_internal_shipping_tracking_id().empty()) {
+    const std::string& _s = this->_internal_shipping_tracking_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.OrderResult.shipping_tracking_id");
+    target = stream->WriteStringMaybeAliased(2, _s, target);
+  }
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Money shipping_cost = 3;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(3, _Internal::shipping_cost(this),
+        _Internal::shipping_cost(this).GetCachedSize(), target, stream);
+  }
+
+  // .oteldemo.Address shipping_address = 4;
+  if (cached_has_bits & 0x00000002u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(4, _Internal::shipping_address(this),
+        _Internal::shipping_address(this).GetCachedSize(), target, stream);
+  }
+
+  // repeated .oteldemo.OrderItem items = 5;
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_items_size()); i < n; i++) {
+    const auto& repfield = this->_internal_items().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(5, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.OrderResult)
+  return target;
+}
+
+::size_t OrderResult::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.OrderResult)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .oteldemo.OrderItem items = 5;
+  total_size += 1UL * this->_internal_items_size();
+  for (const auto& msg : this->_internal_items()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  // string order_id = 1;
+  if (!this->_internal_order_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_order_id());
+  }
+
+  // string shipping_tracking_id = 2;
+  if (!this->_internal_shipping_tracking_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_shipping_tracking_id());
+  }
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    // .oteldemo.Money shipping_cost = 3;
+    if (cached_has_bits & 0x00000001u) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *_impl_.shipping_cost_);
+    }
+
+    // .oteldemo.Address shipping_address = 4;
+    if (cached_has_bits & 0x00000002u) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *_impl_.shipping_address_);
+    }
+
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData OrderResult::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    OrderResult::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*OrderResult::GetClassData() const { return &_class_data_; }
+
+
+void OrderResult::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<OrderResult*>(&to_msg);
+  auto& from = static_cast<const OrderResult&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.OrderResult)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_items()->MergeFrom(from._internal_items());
+  if (!from._internal_order_id().empty()) {
+    _this->_internal_set_order_id(from._internal_order_id());
+  }
+  if (!from._internal_shipping_tracking_id().empty()) {
+    _this->_internal_set_shipping_tracking_id(from._internal_shipping_tracking_id());
+  }
+  cached_has_bits = from._impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      _this->_internal_mutable_shipping_cost()->::oteldemo::Money::MergeFrom(
+          from._internal_shipping_cost());
+    }
+    if (cached_has_bits & 0x00000002u) {
+      _this->_internal_mutable_shipping_address()->::oteldemo::Address::MergeFrom(
+          from._internal_shipping_address());
+    }
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void OrderResult::CopyFrom(const OrderResult& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.OrderResult)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool OrderResult::IsInitialized() const {
+  return true;
+}
+
+void OrderResult::InternalSwap(OrderResult* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  _impl_.items_.InternalSwap(&other->_impl_.items_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.order_id_, lhs_arena,
+                                       &other->_impl_.order_id_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.shipping_tracking_id_, lhs_arena,
+                                       &other->_impl_.shipping_tracking_id_, rhs_arena);
+  ::google::protobuf::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.shipping_address_)
+      + sizeof(OrderResult::_impl_.shipping_address_)
+      - PROTOBUF_FIELD_OFFSET(OrderResult, _impl_.shipping_cost_)>(
+          reinterpret_cast<char*>(&_impl_.shipping_cost_),
+          reinterpret_cast<char*>(&other->_impl_.shipping_cost_));
+}
+
+::google::protobuf::Metadata OrderResult::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[25]);
+}
+// ===================================================================
+
+class SendOrderConfirmationRequest::_Internal {
+ public:
+  using HasBits = decltype(std::declval<SendOrderConfirmationRequest>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(SendOrderConfirmationRequest, _impl_._has_bits_);
+  static const ::oteldemo::OrderResult& order(const SendOrderConfirmationRequest* msg);
+  static void set_has_order(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::OrderResult& SendOrderConfirmationRequest::_Internal::order(const SendOrderConfirmationRequest* msg) {
+  return *msg->_impl_.order_;
+}
+SendOrderConfirmationRequest::SendOrderConfirmationRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.SendOrderConfirmationRequest)
+}
+SendOrderConfirmationRequest::SendOrderConfirmationRequest(const SendOrderConfirmationRequest& from) : ::google::protobuf::Message() {
+  SendOrderConfirmationRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.email_){},
+      decltype(_impl_.order_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.email_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.email_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_email().empty()) {
+    _this->_impl_.email_.Set(from._internal_email(), _this->GetArenaForAllocation());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.order_ = new ::oteldemo::OrderResult(*from._impl_.order_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.SendOrderConfirmationRequest)
+}
+inline void SendOrderConfirmationRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.email_){},
+      decltype(_impl_.order_){nullptr},
+  };
+  _impl_.email_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.email_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+SendOrderConfirmationRequest::~SendOrderConfirmationRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.SendOrderConfirmationRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void SendOrderConfirmationRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.email_.Destroy();
+  if (this != internal_default_instance()) delete _impl_.order_;
+}
+void SendOrderConfirmationRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void SendOrderConfirmationRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.SendOrderConfirmationRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.email_.ClearToEmpty();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.order_ != nullptr);
+    _impl_.order_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* SendOrderConfirmationRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 1, 51, 2> SendOrderConfirmationRequest::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(SendOrderConfirmationRequest, _impl_._has_bits_),
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_SendOrderConfirmationRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .oteldemo.OrderResult order = 2;
+    {::_pbi::TcParser::FastMtS1,
+     {18, 0, 0, PROTOBUF_FIELD_OFFSET(SendOrderConfirmationRequest, _impl_.order_)}},
+    // string email = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(SendOrderConfirmationRequest, _impl_.email_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string email = 1;
+    {PROTOBUF_FIELD_OFFSET(SendOrderConfirmationRequest, _impl_.email_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // .oteldemo.OrderResult order = 2;
+    {PROTOBUF_FIELD_OFFSET(SendOrderConfirmationRequest, _impl_.order_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::OrderResult>()},
+  }}, {{
+    "\45\5\0\0\0\0\0\0"
+    "oteldemo.SendOrderConfirmationRequest"
+    "email"
+  }},
+};
+
+::uint8_t* SendOrderConfirmationRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.SendOrderConfirmationRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string email = 1;
+  if (!this->_internal_email().empty()) {
+    const std::string& _s = this->_internal_email();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.SendOrderConfirmationRequest.email");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.OrderResult order = 2;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(2, _Internal::order(this),
+        _Internal::order(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.SendOrderConfirmationRequest)
+  return target;
+}
+
+::size_t SendOrderConfirmationRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.SendOrderConfirmationRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string email = 1;
+  if (!this->_internal_email().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_email());
+  }
+
+  // .oteldemo.OrderResult order = 2;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.order_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData SendOrderConfirmationRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    SendOrderConfirmationRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*SendOrderConfirmationRequest::GetClassData() const { return &_class_data_; }
+
+
+void SendOrderConfirmationRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<SendOrderConfirmationRequest*>(&to_msg);
+  auto& from = static_cast<const SendOrderConfirmationRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.SendOrderConfirmationRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_email().empty()) {
+    _this->_internal_set_email(from._internal_email());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_order()->::oteldemo::OrderResult::MergeFrom(
+        from._internal_order());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void SendOrderConfirmationRequest::CopyFrom(const SendOrderConfirmationRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.SendOrderConfirmationRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool SendOrderConfirmationRequest::IsInitialized() const {
+  return true;
+}
+
+void SendOrderConfirmationRequest::InternalSwap(SendOrderConfirmationRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.email_, lhs_arena,
+                                       &other->_impl_.email_, rhs_arena);
+  swap(_impl_.order_, other->_impl_.order_);
+}
+
+::google::protobuf::Metadata SendOrderConfirmationRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[26]);
+}
+// ===================================================================
+
+class PlaceOrderRequest::_Internal {
+ public:
+  using HasBits = decltype(std::declval<PlaceOrderRequest>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_._has_bits_);
+  static const ::oteldemo::Address& address(const PlaceOrderRequest* msg);
+  static void set_has_address(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+  static const ::oteldemo::CreditCardInfo& credit_card(const PlaceOrderRequest* msg);
+  static void set_has_credit_card(HasBits* has_bits) {
+    (*has_bits)[0] |= 2u;
+  }
+};
+
+const ::oteldemo::Address& PlaceOrderRequest::_Internal::address(const PlaceOrderRequest* msg) {
+  return *msg->_impl_.address_;
+}
+const ::oteldemo::CreditCardInfo& PlaceOrderRequest::_Internal::credit_card(const PlaceOrderRequest* msg) {
+  return *msg->_impl_.credit_card_;
+}
+PlaceOrderRequest::PlaceOrderRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.PlaceOrderRequest)
+}
+PlaceOrderRequest::PlaceOrderRequest(const PlaceOrderRequest& from) : ::google::protobuf::Message() {
+  PlaceOrderRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.user_id_){},
+      decltype(_impl_.user_currency_){},
+      decltype(_impl_.email_){},
+      decltype(_impl_.address_){nullptr},
+      decltype(_impl_.credit_card_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_user_id().empty()) {
+    _this->_impl_.user_id_.Set(from._internal_user_id(), _this->GetArenaForAllocation());
+  }
+  _impl_.user_currency_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_currency_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_user_currency().empty()) {
+    _this->_impl_.user_currency_.Set(from._internal_user_currency(), _this->GetArenaForAllocation());
+  }
+  _impl_.email_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.email_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_email().empty()) {
+    _this->_impl_.email_.Set(from._internal_email(), _this->GetArenaForAllocation());
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.address_ = new ::oteldemo::Address(*from._impl_.address_);
+  }
+  if ((from._impl_._has_bits_[0] & 0x00000002u) != 0) {
+    _this->_impl_.credit_card_ = new ::oteldemo::CreditCardInfo(*from._impl_.credit_card_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.PlaceOrderRequest)
+}
+inline void PlaceOrderRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.user_id_){},
+      decltype(_impl_.user_currency_){},
+      decltype(_impl_.email_){},
+      decltype(_impl_.address_){nullptr},
+      decltype(_impl_.credit_card_){nullptr},
+  };
+  _impl_.user_id_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_id_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.user_currency_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.user_currency_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.email_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.email_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+PlaceOrderRequest::~PlaceOrderRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.PlaceOrderRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void PlaceOrderRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.user_id_.Destroy();
+  _impl_.user_currency_.Destroy();
+  _impl_.email_.Destroy();
+  if (this != internal_default_instance()) delete _impl_.address_;
+  if (this != internal_default_instance()) delete _impl_.credit_card_;
+}
+void PlaceOrderRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void PlaceOrderRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.PlaceOrderRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.user_id_.ClearToEmpty();
+  _impl_.user_currency_.ClearToEmpty();
+  _impl_.email_.ClearToEmpty();
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      ABSL_DCHECK(_impl_.address_ != nullptr);
+      _impl_.address_->Clear();
+    }
+    if (cached_has_bits & 0x00000002u) {
+      ABSL_DCHECK(_impl_.credit_card_ != nullptr);
+      _impl_.credit_card_->Clear();
+    }
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* PlaceOrderRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<3, 5, 2, 60, 2> PlaceOrderRequest::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_._has_bits_),
+    0, // no _extensions_
+    6, 56,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967240,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    5,  // num_field_entries
+    2,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_PlaceOrderRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    {::_pbi::TcParser::MiniParse, {}},
+    // string user_id = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.user_id_)}},
+    // string user_currency = 2;
+    {::_pbi::TcParser::FastUS1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.user_currency_)}},
+    // .oteldemo.Address address = 3;
+    {::_pbi::TcParser::FastMtS1,
+     {26, 0, 0, PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.address_)}},
+    {::_pbi::TcParser::MiniParse, {}},
+    // string email = 5;
+    {::_pbi::TcParser::FastUS1,
+     {42, 63, 0, PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.email_)}},
+    // .oteldemo.CreditCardInfo credit_card = 6;
+    {::_pbi::TcParser::FastMtS1,
+     {50, 1, 1, PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.credit_card_)}},
+    {::_pbi::TcParser::MiniParse, {}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string user_id = 1;
+    {PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.user_id_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string user_currency = 2;
+    {PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.user_currency_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // .oteldemo.Address address = 3;
+    {PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.address_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+    // string email = 5;
+    {PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.email_), -1, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // .oteldemo.CreditCardInfo credit_card = 6;
+    {PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.credit_card_), _Internal::kHasBitsOffset + 1, 1,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Address>()},
+    {::_pbi::TcParser::GetTable<::oteldemo::CreditCardInfo>()},
+  }}, {{
+    "\32\7\15\0\5\0\0\0"
+    "oteldemo.PlaceOrderRequest"
+    "user_id"
+    "user_currency"
+    "email"
+  }},
+};
+
+::uint8_t* PlaceOrderRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.PlaceOrderRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    const std::string& _s = this->_internal_user_id();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.PlaceOrderRequest.user_id");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // string user_currency = 2;
+  if (!this->_internal_user_currency().empty()) {
+    const std::string& _s = this->_internal_user_currency();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.PlaceOrderRequest.user_currency");
+    target = stream->WriteStringMaybeAliased(2, _s, target);
+  }
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Address address = 3;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(3, _Internal::address(this),
+        _Internal::address(this).GetCachedSize(), target, stream);
+  }
+
+  // string email = 5;
+  if (!this->_internal_email().empty()) {
+    const std::string& _s = this->_internal_email();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.PlaceOrderRequest.email");
+    target = stream->WriteStringMaybeAliased(5, _s, target);
+  }
+
+  // .oteldemo.CreditCardInfo credit_card = 6;
+  if (cached_has_bits & 0x00000002u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(6, _Internal::credit_card(this),
+        _Internal::credit_card(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.PlaceOrderRequest)
+  return target;
+}
+
+::size_t PlaceOrderRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.PlaceOrderRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string user_id = 1;
+  if (!this->_internal_user_id().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_user_id());
+  }
+
+  // string user_currency = 2;
+  if (!this->_internal_user_currency().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_user_currency());
+  }
+
+  // string email = 5;
+  if (!this->_internal_email().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_email());
+  }
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    // .oteldemo.Address address = 3;
+    if (cached_has_bits & 0x00000001u) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *_impl_.address_);
+    }
+
+    // .oteldemo.CreditCardInfo credit_card = 6;
+    if (cached_has_bits & 0x00000002u) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::MessageSize(
+          *_impl_.credit_card_);
+    }
+
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData PlaceOrderRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    PlaceOrderRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*PlaceOrderRequest::GetClassData() const { return &_class_data_; }
+
+
+void PlaceOrderRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<PlaceOrderRequest*>(&to_msg);
+  auto& from = static_cast<const PlaceOrderRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.PlaceOrderRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_user_id().empty()) {
+    _this->_internal_set_user_id(from._internal_user_id());
+  }
+  if (!from._internal_user_currency().empty()) {
+    _this->_internal_set_user_currency(from._internal_user_currency());
+  }
+  if (!from._internal_email().empty()) {
+    _this->_internal_set_email(from._internal_email());
+  }
+  cached_has_bits = from._impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000003u) {
+    if (cached_has_bits & 0x00000001u) {
+      _this->_internal_mutable_address()->::oteldemo::Address::MergeFrom(
+          from._internal_address());
+    }
+    if (cached_has_bits & 0x00000002u) {
+      _this->_internal_mutable_credit_card()->::oteldemo::CreditCardInfo::MergeFrom(
+          from._internal_credit_card());
+    }
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void PlaceOrderRequest::CopyFrom(const PlaceOrderRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.PlaceOrderRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool PlaceOrderRequest::IsInitialized() const {
+  return true;
+}
+
+void PlaceOrderRequest::InternalSwap(PlaceOrderRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.user_id_, lhs_arena,
+                                       &other->_impl_.user_id_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.user_currency_, lhs_arena,
+                                       &other->_impl_.user_currency_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.email_, lhs_arena,
+                                       &other->_impl_.email_, rhs_arena);
+  ::google::protobuf::internal::memswap<
+      PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.credit_card_)
+      + sizeof(PlaceOrderRequest::_impl_.credit_card_)
+      - PROTOBUF_FIELD_OFFSET(PlaceOrderRequest, _impl_.address_)>(
+          reinterpret_cast<char*>(&_impl_.address_),
+          reinterpret_cast<char*>(&other->_impl_.address_));
+}
+
+::google::protobuf::Metadata PlaceOrderRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[27]);
+}
+// ===================================================================
+
+class PlaceOrderResponse::_Internal {
+ public:
+  using HasBits = decltype(std::declval<PlaceOrderResponse>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(PlaceOrderResponse, _impl_._has_bits_);
+  static const ::oteldemo::OrderResult& order(const PlaceOrderResponse* msg);
+  static void set_has_order(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::OrderResult& PlaceOrderResponse::_Internal::order(const PlaceOrderResponse* msg) {
+  return *msg->_impl_.order_;
+}
+PlaceOrderResponse::PlaceOrderResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.PlaceOrderResponse)
+}
+PlaceOrderResponse::PlaceOrderResponse(const PlaceOrderResponse& from) : ::google::protobuf::Message() {
+  PlaceOrderResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.order_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.order_ = new ::oteldemo::OrderResult(*from._impl_.order_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.PlaceOrderResponse)
+}
+inline void PlaceOrderResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.order_){nullptr},
+  };
+}
+PlaceOrderResponse::~PlaceOrderResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.PlaceOrderResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void PlaceOrderResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.order_;
+}
+void PlaceOrderResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void PlaceOrderResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.PlaceOrderResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.order_ != nullptr);
+    _impl_.order_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* PlaceOrderResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> PlaceOrderResponse::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(PlaceOrderResponse, _impl_._has_bits_),
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_PlaceOrderResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .oteldemo.OrderResult order = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(PlaceOrderResponse, _impl_.order_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .oteldemo.OrderResult order = 1;
+    {PROTOBUF_FIELD_OFFSET(PlaceOrderResponse, _impl_.order_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::OrderResult>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* PlaceOrderResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.PlaceOrderResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.OrderResult order = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::order(this),
+        _Internal::order(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.PlaceOrderResponse)
+  return target;
+}
+
+::size_t PlaceOrderResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.PlaceOrderResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .oteldemo.OrderResult order = 1;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.order_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData PlaceOrderResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    PlaceOrderResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*PlaceOrderResponse::GetClassData() const { return &_class_data_; }
+
+
+void PlaceOrderResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<PlaceOrderResponse*>(&to_msg);
+  auto& from = static_cast<const PlaceOrderResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.PlaceOrderResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_order()->::oteldemo::OrderResult::MergeFrom(
+        from._internal_order());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void PlaceOrderResponse::CopyFrom(const PlaceOrderResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.PlaceOrderResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool PlaceOrderResponse::IsInitialized() const {
+  return true;
+}
+
+void PlaceOrderResponse::InternalSwap(PlaceOrderResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  swap(_impl_.order_, other->_impl_.order_);
+}
+
+::google::protobuf::Metadata PlaceOrderResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[28]);
+}
+// ===================================================================
+
+class AdRequest::_Internal {
+ public:
+};
+
+AdRequest::AdRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.AdRequest)
+}
+AdRequest::AdRequest(const AdRequest& from) : ::google::protobuf::Message() {
+  AdRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.context_keys_){from._impl_.context_keys_},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.AdRequest)
+}
+inline void AdRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.context_keys_){arena},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+}
+AdRequest::~AdRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.AdRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void AdRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _internal_mutable_context_keys()->~RepeatedPtrField();
+}
+void AdRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void AdRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.AdRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_context_keys()->Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* AdRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 39, 2> AdRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_AdRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated string context_keys = 1;
+    {::_pbi::TcParser::FastUR1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(AdRequest, _impl_.context_keys_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // repeated string context_keys = 1;
+    {PROTOBUF_FIELD_OFFSET(AdRequest, _impl_.context_keys_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kUtf8String | ::_fl::kRepSString)},
+  }},
+  // no aux_entries
+  {{
+    "\22\14\0\0\0\0\0\0"
+    "oteldemo.AdRequest"
+    "context_keys"
+  }},
+};
+
+::uint8_t* AdRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.AdRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // repeated string context_keys = 1;
+  for (int i = 0, n = this->_internal_context_keys_size(); i < n; ++i) {
+    const auto& s = this->_internal_context_keys().Get(i);
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        s.data(), static_cast<int>(s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.AdRequest.context_keys");
+    target = stream->WriteString(1, s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.AdRequest)
+  return target;
+}
+
+::size_t AdRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.AdRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated string context_keys = 1;
+  total_size += 1 * ::google::protobuf::internal::FromIntSize(_internal_context_keys().size());
+  for (int i = 0, n = _internal_context_keys().size(); i < n; ++i) {
+    total_size += ::google::protobuf::internal::WireFormatLite::StringSize(
+        _internal_context_keys().Get(i));
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData AdRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    AdRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*AdRequest::GetClassData() const { return &_class_data_; }
+
+
+void AdRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<AdRequest*>(&to_msg);
+  auto& from = static_cast<const AdRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.AdRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_context_keys()->MergeFrom(from._internal_context_keys());
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void AdRequest::CopyFrom(const AdRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.AdRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool AdRequest::IsInitialized() const {
+  return true;
+}
+
+void AdRequest::InternalSwap(AdRequest* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.context_keys_.InternalSwap(&other->_impl_.context_keys_);
+}
+
+::google::protobuf::Metadata AdRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[29]);
+}
+// ===================================================================
+
+class AdResponse::_Internal {
+ public:
+};
+
+AdResponse::AdResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.AdResponse)
+}
+AdResponse::AdResponse(const AdResponse& from) : ::google::protobuf::Message() {
+  AdResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.ads_){from._impl_.ads_},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.AdResponse)
+}
+inline void AdResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.ads_){arena},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+}
+AdResponse::~AdResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.AdResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void AdResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.ads_.~RepeatedPtrField();
+}
+void AdResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void AdResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.AdResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_ads()->Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* AdResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> AdResponse::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_AdResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .oteldemo.Ad ads = 1;
+    {::_pbi::TcParser::FastMtR1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(AdResponse, _impl_.ads_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // repeated .oteldemo.Ad ads = 1;
+    {PROTOBUF_FIELD_OFFSET(AdResponse, _impl_.ads_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Ad>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* AdResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.AdResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // repeated .oteldemo.Ad ads = 1;
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_ads_size()); i < n; i++) {
+    const auto& repfield = this->_internal_ads().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(1, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.AdResponse)
+  return target;
+}
+
+::size_t AdResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.AdResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .oteldemo.Ad ads = 1;
+  total_size += 1UL * this->_internal_ads_size();
+  for (const auto& msg : this->_internal_ads()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData AdResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    AdResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*AdResponse::GetClassData() const { return &_class_data_; }
+
+
+void AdResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<AdResponse*>(&to_msg);
+  auto& from = static_cast<const AdResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.AdResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_ads()->MergeFrom(from._internal_ads());
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void AdResponse::CopyFrom(const AdResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.AdResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool AdResponse::IsInitialized() const {
+  return true;
+}
+
+void AdResponse::InternalSwap(AdResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.ads_.InternalSwap(&other->_impl_.ads_);
+}
+
+::google::protobuf::Metadata AdResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[30]);
+}
+// ===================================================================
+
+class Ad::_Internal {
+ public:
+};
+
+Ad::Ad(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.Ad)
+}
+Ad::Ad(const Ad& from) : ::google::protobuf::Message() {
+  Ad* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.redirect_url_){},
+      decltype(_impl_.text_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.redirect_url_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.redirect_url_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_redirect_url().empty()) {
+    _this->_impl_.redirect_url_.Set(from._internal_redirect_url(), _this->GetArenaForAllocation());
+  }
+  _impl_.text_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.text_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_text().empty()) {
+    _this->_impl_.text_.Set(from._internal_text(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.Ad)
+}
+inline void Ad::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.redirect_url_){},
+      decltype(_impl_.text_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.redirect_url_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.redirect_url_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.text_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.text_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+Ad::~Ad() {
+  // @@protoc_insertion_point(destructor:oteldemo.Ad)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void Ad::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.redirect_url_.Destroy();
+  _impl_.text_.Destroy();
+}
+void Ad::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void Ad::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.Ad)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.redirect_url_.ClearToEmpty();
+  _impl_.text_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* Ad::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 0, 36, 2> Ad::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_Ad_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string text = 2;
+    {::_pbi::TcParser::FastUS1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(Ad, _impl_.text_)}},
+    // string redirect_url = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(Ad, _impl_.redirect_url_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string redirect_url = 1;
+    {PROTOBUF_FIELD_OFFSET(Ad, _impl_.redirect_url_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string text = 2;
+    {PROTOBUF_FIELD_OFFSET(Ad, _impl_.text_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\13\14\4\0\0\0\0\0"
+    "oteldemo.Ad"
+    "redirect_url"
+    "text"
+  }},
+};
+
+::uint8_t* Ad::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.Ad)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string redirect_url = 1;
+  if (!this->_internal_redirect_url().empty()) {
+    const std::string& _s = this->_internal_redirect_url();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Ad.redirect_url");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // string text = 2;
+  if (!this->_internal_text().empty()) {
+    const std::string& _s = this->_internal_text();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Ad.text");
+    target = stream->WriteStringMaybeAliased(2, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.Ad)
+  return target;
+}
+
+::size_t Ad::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.Ad)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string redirect_url = 1;
+  if (!this->_internal_redirect_url().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_redirect_url());
+  }
+
+  // string text = 2;
+  if (!this->_internal_text().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_text());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData Ad::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    Ad::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*Ad::GetClassData() const { return &_class_data_; }
+
+
+void Ad::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<Ad*>(&to_msg);
+  auto& from = static_cast<const Ad&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.Ad)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_redirect_url().empty()) {
+    _this->_internal_set_redirect_url(from._internal_redirect_url());
+  }
+  if (!from._internal_text().empty()) {
+    _this->_internal_set_text(from._internal_text());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void Ad::CopyFrom(const Ad& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.Ad)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool Ad::IsInitialized() const {
+  return true;
+}
+
+void Ad::InternalSwap(Ad* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.redirect_url_, lhs_arena,
+                                       &other->_impl_.redirect_url_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.text_, lhs_arena,
+                                       &other->_impl_.text_, rhs_arena);
+}
+
+::google::protobuf::Metadata Ad::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[31]);
+}
+// ===================================================================
+
+class Flag::_Internal {
+ public:
+};
+
+Flag::Flag(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.Flag)
+}
+Flag::Flag(const Flag& from) : ::google::protobuf::Message() {
+  Flag* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      decltype(_impl_.description_){},
+      decltype(_impl_.enabled_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_name().empty()) {
+    _this->_impl_.name_.Set(from._internal_name(), _this->GetArenaForAllocation());
+  }
+  _impl_.description_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.description_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_description().empty()) {
+    _this->_impl_.description_.Set(from._internal_description(), _this->GetArenaForAllocation());
+  }
+  _this->_impl_.enabled_ = from._impl_.enabled_;
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.Flag)
+}
+inline void Flag::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      decltype(_impl_.description_){},
+      decltype(_impl_.enabled_){false},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.description_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.description_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+Flag::~Flag() {
+  // @@protoc_insertion_point(destructor:oteldemo.Flag)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void Flag::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.name_.Destroy();
+  _impl_.description_.Destroy();
+}
+void Flag::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void Flag::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.Flag)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.name_.ClearToEmpty();
+  _impl_.description_.ClearToEmpty();
+  _impl_.enabled_ = false;
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* Flag::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<2, 3, 0, 37, 2> Flag::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    3, 24,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967288,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    3,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_Flag_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    {::_pbi::TcParser::MiniParse, {}},
+    // string name = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(Flag, _impl_.name_)}},
+    // string description = 2;
+    {::_pbi::TcParser::FastUS1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(Flag, _impl_.description_)}},
+    // bool enabled = 3;
+    {::_pbi::TcParser::SingularVarintNoZag1<bool, offsetof(Flag, _impl_.enabled_), 63>(),
+     {24, 63, 0, PROTOBUF_FIELD_OFFSET(Flag, _impl_.enabled_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string name = 1;
+    {PROTOBUF_FIELD_OFFSET(Flag, _impl_.name_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string description = 2;
+    {PROTOBUF_FIELD_OFFSET(Flag, _impl_.description_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // bool enabled = 3;
+    {PROTOBUF_FIELD_OFFSET(Flag, _impl_.enabled_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kBool)},
+  }},
+  // no aux_entries
+  {{
+    "\15\4\13\0\0\0\0\0"
+    "oteldemo.Flag"
+    "name"
+    "description"
+  }},
+};
+
+::uint8_t* Flag::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.Flag)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    const std::string& _s = this->_internal_name();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Flag.name");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // string description = 2;
+  if (!this->_internal_description().empty()) {
+    const std::string& _s = this->_internal_description();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.Flag.description");
+    target = stream->WriteStringMaybeAliased(2, _s, target);
+  }
+
+  // bool enabled = 3;
+  if (this->_internal_enabled() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteBoolToArray(
+        3, this->_internal_enabled(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.Flag)
+  return target;
+}
+
+::size_t Flag::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.Flag)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_name());
+  }
+
+  // string description = 2;
+  if (!this->_internal_description().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_description());
+  }
+
+  // bool enabled = 3;
+  if (this->_internal_enabled() != 0) {
+    total_size += 2;
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData Flag::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    Flag::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*Flag::GetClassData() const { return &_class_data_; }
+
+
+void Flag::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<Flag*>(&to_msg);
+  auto& from = static_cast<const Flag&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.Flag)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_name().empty()) {
+    _this->_internal_set_name(from._internal_name());
+  }
+  if (!from._internal_description().empty()) {
+    _this->_internal_set_description(from._internal_description());
+  }
+  if (from._internal_enabled() != 0) {
+    _this->_internal_set_enabled(from._internal_enabled());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void Flag::CopyFrom(const Flag& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.Flag)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool Flag::IsInitialized() const {
+  return true;
+}
+
+void Flag::InternalSwap(Flag* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.name_, lhs_arena,
+                                       &other->_impl_.name_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.description_, lhs_arena,
+                                       &other->_impl_.description_, rhs_arena);
+        swap(_impl_.enabled_, other->_impl_.enabled_);
+}
+
+::google::protobuf::Metadata Flag::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[32]);
+}
+// ===================================================================
+
+class GetFlagRequest::_Internal {
+ public:
+};
+
+GetFlagRequest::GetFlagRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.GetFlagRequest)
+}
+GetFlagRequest::GetFlagRequest(const GetFlagRequest& from) : ::google::protobuf::Message() {
+  GetFlagRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_name().empty()) {
+    _this->_impl_.name_.Set(from._internal_name(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.GetFlagRequest)
+}
+inline void GetFlagRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+GetFlagRequest::~GetFlagRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.GetFlagRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void GetFlagRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.name_.Destroy();
+}
+void GetFlagRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void GetFlagRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.GetFlagRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.name_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* GetFlagRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 36, 2> GetFlagRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_GetFlagRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string name = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(GetFlagRequest, _impl_.name_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string name = 1;
+    {PROTOBUF_FIELD_OFFSET(GetFlagRequest, _impl_.name_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\27\4\0\0\0\0\0\0"
+    "oteldemo.GetFlagRequest"
+    "name"
+  }},
+};
+
+::uint8_t* GetFlagRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.GetFlagRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    const std::string& _s = this->_internal_name();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.GetFlagRequest.name");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.GetFlagRequest)
+  return target;
+}
+
+::size_t GetFlagRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.GetFlagRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_name());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData GetFlagRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    GetFlagRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*GetFlagRequest::GetClassData() const { return &_class_data_; }
+
+
+void GetFlagRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<GetFlagRequest*>(&to_msg);
+  auto& from = static_cast<const GetFlagRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.GetFlagRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_name().empty()) {
+    _this->_internal_set_name(from._internal_name());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void GetFlagRequest::CopyFrom(const GetFlagRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.GetFlagRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool GetFlagRequest::IsInitialized() const {
+  return true;
+}
+
+void GetFlagRequest::InternalSwap(GetFlagRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.name_, lhs_arena,
+                                       &other->_impl_.name_, rhs_arena);
+}
+
+::google::protobuf::Metadata GetFlagRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[33]);
+}
+// ===================================================================
+
+class GetFlagResponse::_Internal {
+ public:
+  using HasBits = decltype(std::declval<GetFlagResponse>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(GetFlagResponse, _impl_._has_bits_);
+  static const ::oteldemo::Flag& flag(const GetFlagResponse* msg);
+  static void set_has_flag(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::Flag& GetFlagResponse::_Internal::flag(const GetFlagResponse* msg) {
+  return *msg->_impl_.flag_;
+}
+GetFlagResponse::GetFlagResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.GetFlagResponse)
+}
+GetFlagResponse::GetFlagResponse(const GetFlagResponse& from) : ::google::protobuf::Message() {
+  GetFlagResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.flag_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.flag_ = new ::oteldemo::Flag(*from._impl_.flag_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.GetFlagResponse)
+}
+inline void GetFlagResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.flag_){nullptr},
+  };
+}
+GetFlagResponse::~GetFlagResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.GetFlagResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void GetFlagResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.flag_;
+}
+void GetFlagResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void GetFlagResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.GetFlagResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.flag_ != nullptr);
+    _impl_.flag_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* GetFlagResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> GetFlagResponse::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(GetFlagResponse, _impl_._has_bits_),
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_GetFlagResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .oteldemo.Flag flag = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(GetFlagResponse, _impl_.flag_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .oteldemo.Flag flag = 1;
+    {PROTOBUF_FIELD_OFFSET(GetFlagResponse, _impl_.flag_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Flag>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* GetFlagResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.GetFlagResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Flag flag = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::flag(this),
+        _Internal::flag(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.GetFlagResponse)
+  return target;
+}
+
+::size_t GetFlagResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.GetFlagResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .oteldemo.Flag flag = 1;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.flag_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData GetFlagResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    GetFlagResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*GetFlagResponse::GetClassData() const { return &_class_data_; }
+
+
+void GetFlagResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<GetFlagResponse*>(&to_msg);
+  auto& from = static_cast<const GetFlagResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.GetFlagResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_flag()->::oteldemo::Flag::MergeFrom(
+        from._internal_flag());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void GetFlagResponse::CopyFrom(const GetFlagResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.GetFlagResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool GetFlagResponse::IsInitialized() const {
+  return true;
+}
+
+void GetFlagResponse::InternalSwap(GetFlagResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  swap(_impl_.flag_, other->_impl_.flag_);
+}
+
+::google::protobuf::Metadata GetFlagResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[34]);
+}
+// ===================================================================
+
+class CreateFlagRequest::_Internal {
+ public:
+};
+
+CreateFlagRequest::CreateFlagRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.CreateFlagRequest)
+}
+CreateFlagRequest::CreateFlagRequest(const CreateFlagRequest& from) : ::google::protobuf::Message() {
+  CreateFlagRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      decltype(_impl_.description_){},
+      decltype(_impl_.enabled_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_name().empty()) {
+    _this->_impl_.name_.Set(from._internal_name(), _this->GetArenaForAllocation());
+  }
+  _impl_.description_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.description_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_description().empty()) {
+    _this->_impl_.description_.Set(from._internal_description(), _this->GetArenaForAllocation());
+  }
+  _this->_impl_.enabled_ = from._impl_.enabled_;
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.CreateFlagRequest)
+}
+inline void CreateFlagRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      decltype(_impl_.description_){},
+      decltype(_impl_.enabled_){false},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  _impl_.description_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.description_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+CreateFlagRequest::~CreateFlagRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.CreateFlagRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void CreateFlagRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.name_.Destroy();
+  _impl_.description_.Destroy();
+}
+void CreateFlagRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void CreateFlagRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.CreateFlagRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.name_.ClearToEmpty();
+  _impl_.description_.ClearToEmpty();
+  _impl_.enabled_ = false;
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* CreateFlagRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<2, 3, 0, 50, 2> CreateFlagRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    3, 24,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967288,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    3,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_CreateFlagRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    {::_pbi::TcParser::MiniParse, {}},
+    // string name = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(CreateFlagRequest, _impl_.name_)}},
+    // string description = 2;
+    {::_pbi::TcParser::FastUS1,
+     {18, 63, 0, PROTOBUF_FIELD_OFFSET(CreateFlagRequest, _impl_.description_)}},
+    // bool enabled = 3;
+    {::_pbi::TcParser::SingularVarintNoZag1<bool, offsetof(CreateFlagRequest, _impl_.enabled_), 63>(),
+     {24, 63, 0, PROTOBUF_FIELD_OFFSET(CreateFlagRequest, _impl_.enabled_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string name = 1;
+    {PROTOBUF_FIELD_OFFSET(CreateFlagRequest, _impl_.name_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // string description = 2;
+    {PROTOBUF_FIELD_OFFSET(CreateFlagRequest, _impl_.description_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // bool enabled = 3;
+    {PROTOBUF_FIELD_OFFSET(CreateFlagRequest, _impl_.enabled_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kBool)},
+  }},
+  // no aux_entries
+  {{
+    "\32\4\13\0\0\0\0\0"
+    "oteldemo.CreateFlagRequest"
+    "name"
+    "description"
+  }},
+};
+
+::uint8_t* CreateFlagRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.CreateFlagRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    const std::string& _s = this->_internal_name();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.CreateFlagRequest.name");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // string description = 2;
+  if (!this->_internal_description().empty()) {
+    const std::string& _s = this->_internal_description();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.CreateFlagRequest.description");
+    target = stream->WriteStringMaybeAliased(2, _s, target);
+  }
+
+  // bool enabled = 3;
+  if (this->_internal_enabled() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteBoolToArray(
+        3, this->_internal_enabled(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.CreateFlagRequest)
+  return target;
+}
+
+::size_t CreateFlagRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.CreateFlagRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_name());
+  }
+
+  // string description = 2;
+  if (!this->_internal_description().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_description());
+  }
+
+  // bool enabled = 3;
+  if (this->_internal_enabled() != 0) {
+    total_size += 2;
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData CreateFlagRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    CreateFlagRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*CreateFlagRequest::GetClassData() const { return &_class_data_; }
+
+
+void CreateFlagRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<CreateFlagRequest*>(&to_msg);
+  auto& from = static_cast<const CreateFlagRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.CreateFlagRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_name().empty()) {
+    _this->_internal_set_name(from._internal_name());
+  }
+  if (!from._internal_description().empty()) {
+    _this->_internal_set_description(from._internal_description());
+  }
+  if (from._internal_enabled() != 0) {
+    _this->_internal_set_enabled(from._internal_enabled());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void CreateFlagRequest::CopyFrom(const CreateFlagRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.CreateFlagRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool CreateFlagRequest::IsInitialized() const {
+  return true;
+}
+
+void CreateFlagRequest::InternalSwap(CreateFlagRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.name_, lhs_arena,
+                                       &other->_impl_.name_, rhs_arena);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.description_, lhs_arena,
+                                       &other->_impl_.description_, rhs_arena);
+        swap(_impl_.enabled_, other->_impl_.enabled_);
+}
+
+::google::protobuf::Metadata CreateFlagRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[35]);
+}
+// ===================================================================
+
+class CreateFlagResponse::_Internal {
+ public:
+  using HasBits = decltype(std::declval<CreateFlagResponse>()._impl_._has_bits_);
+  static constexpr ::int32_t kHasBitsOffset =
+    8 * PROTOBUF_FIELD_OFFSET(CreateFlagResponse, _impl_._has_bits_);
+  static const ::oteldemo::Flag& flag(const CreateFlagResponse* msg);
+  static void set_has_flag(HasBits* has_bits) {
+    (*has_bits)[0] |= 1u;
+  }
+};
+
+const ::oteldemo::Flag& CreateFlagResponse::_Internal::flag(const CreateFlagResponse* msg) {
+  return *msg->_impl_.flag_;
+}
+CreateFlagResponse::CreateFlagResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.CreateFlagResponse)
+}
+CreateFlagResponse::CreateFlagResponse(const CreateFlagResponse& from) : ::google::protobuf::Message() {
+  CreateFlagResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){from._impl_._has_bits_},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.flag_){nullptr},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_impl_.flag_ = new ::oteldemo::Flag(*from._impl_.flag_);
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.CreateFlagResponse)
+}
+inline void CreateFlagResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_._has_bits_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+      decltype(_impl_.flag_){nullptr},
+  };
+}
+CreateFlagResponse::~CreateFlagResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.CreateFlagResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void CreateFlagResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  if (this != internal_default_instance()) delete _impl_.flag_;
+}
+void CreateFlagResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void CreateFlagResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.CreateFlagResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    ABSL_DCHECK(_impl_.flag_ != nullptr);
+    _impl_.flag_->Clear();
+  }
+  _impl_._has_bits_.Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* CreateFlagResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> CreateFlagResponse::_table_ = {
+  {
+    PROTOBUF_FIELD_OFFSET(CreateFlagResponse, _impl_._has_bits_),
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_CreateFlagResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .oteldemo.Flag flag = 1;
+    {::_pbi::TcParser::FastMtS1,
+     {10, 0, 0, PROTOBUF_FIELD_OFFSET(CreateFlagResponse, _impl_.flag_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .oteldemo.Flag flag = 1;
+    {PROTOBUF_FIELD_OFFSET(CreateFlagResponse, _impl_.flag_), _Internal::kHasBitsOffset + 0, 0,
+    (0 | ::_fl::kFcOptional | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Flag>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* CreateFlagResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.CreateFlagResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  cached_has_bits = _impl_._has_bits_[0];
+  // .oteldemo.Flag flag = 1;
+  if (cached_has_bits & 0x00000001u) {
+    target = ::google::protobuf::internal::WireFormatLite::
+      InternalWriteMessage(1, _Internal::flag(this),
+        _Internal::flag(this).GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.CreateFlagResponse)
+  return target;
+}
+
+::size_t CreateFlagResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.CreateFlagResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .oteldemo.Flag flag = 1;
+  cached_has_bits = _impl_._has_bits_[0];
+  if (cached_has_bits & 0x00000001u) {
+    total_size += 1 +
+      ::google::protobuf::internal::WireFormatLite::MessageSize(
+        *_impl_.flag_);
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData CreateFlagResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    CreateFlagResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*CreateFlagResponse::GetClassData() const { return &_class_data_; }
+
+
+void CreateFlagResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<CreateFlagResponse*>(&to_msg);
+  auto& from = static_cast<const CreateFlagResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.CreateFlagResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if ((from._impl_._has_bits_[0] & 0x00000001u) != 0) {
+    _this->_internal_mutable_flag()->::oteldemo::Flag::MergeFrom(
+        from._internal_flag());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void CreateFlagResponse::CopyFrom(const CreateFlagResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.CreateFlagResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool CreateFlagResponse::IsInitialized() const {
+  return true;
+}
+
+void CreateFlagResponse::InternalSwap(CreateFlagResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_._has_bits_[0], other->_impl_._has_bits_[0]);
+  swap(_impl_.flag_, other->_impl_.flag_);
+}
+
+::google::protobuf::Metadata CreateFlagResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[36]);
+}
+// ===================================================================
+
+class UpdateFlagRequest::_Internal {
+ public:
+};
+
+UpdateFlagRequest::UpdateFlagRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.UpdateFlagRequest)
+}
+UpdateFlagRequest::UpdateFlagRequest(const UpdateFlagRequest& from) : ::google::protobuf::Message() {
+  UpdateFlagRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      decltype(_impl_.enabled_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_name().empty()) {
+    _this->_impl_.name_.Set(from._internal_name(), _this->GetArenaForAllocation());
+  }
+  _this->_impl_.enabled_ = from._impl_.enabled_;
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.UpdateFlagRequest)
+}
+inline void UpdateFlagRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      decltype(_impl_.enabled_){false},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+UpdateFlagRequest::~UpdateFlagRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.UpdateFlagRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void UpdateFlagRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.name_.Destroy();
+}
+void UpdateFlagRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void UpdateFlagRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.UpdateFlagRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.name_.ClearToEmpty();
+  _impl_.enabled_ = false;
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* UpdateFlagRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<1, 2, 0, 39, 2> UpdateFlagRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    2, 8,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967292,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    2,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_UpdateFlagRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // bool enabled = 2;
+    {::_pbi::TcParser::SingularVarintNoZag1<bool, offsetof(UpdateFlagRequest, _impl_.enabled_), 63>(),
+     {16, 63, 0, PROTOBUF_FIELD_OFFSET(UpdateFlagRequest, _impl_.enabled_)}},
+    // string name = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(UpdateFlagRequest, _impl_.name_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string name = 1;
+    {PROTOBUF_FIELD_OFFSET(UpdateFlagRequest, _impl_.name_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+    // bool enabled = 2;
+    {PROTOBUF_FIELD_OFFSET(UpdateFlagRequest, _impl_.enabled_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kBool)},
+  }},
+  // no aux_entries
+  {{
+    "\32\4\0\0\0\0\0\0"
+    "oteldemo.UpdateFlagRequest"
+    "name"
+  }},
+};
+
+::uint8_t* UpdateFlagRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.UpdateFlagRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    const std::string& _s = this->_internal_name();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.UpdateFlagRequest.name");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  // bool enabled = 2;
+  if (this->_internal_enabled() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteBoolToArray(
+        2, this->_internal_enabled(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.UpdateFlagRequest)
+  return target;
+}
+
+::size_t UpdateFlagRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.UpdateFlagRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_name());
+  }
+
+  // bool enabled = 2;
+  if (this->_internal_enabled() != 0) {
+    total_size += 2;
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData UpdateFlagRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    UpdateFlagRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*UpdateFlagRequest::GetClassData() const { return &_class_data_; }
+
+
+void UpdateFlagRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<UpdateFlagRequest*>(&to_msg);
+  auto& from = static_cast<const UpdateFlagRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.UpdateFlagRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_name().empty()) {
+    _this->_internal_set_name(from._internal_name());
+  }
+  if (from._internal_enabled() != 0) {
+    _this->_internal_set_enabled(from._internal_enabled());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void UpdateFlagRequest::CopyFrom(const UpdateFlagRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.UpdateFlagRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool UpdateFlagRequest::IsInitialized() const {
+  return true;
+}
+
+void UpdateFlagRequest::InternalSwap(UpdateFlagRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.name_, lhs_arena,
+                                       &other->_impl_.name_, rhs_arena);
+        swap(_impl_.enabled_, other->_impl_.enabled_);
+}
+
+::google::protobuf::Metadata UpdateFlagRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[37]);
+}
+// ===================================================================
+
+class UpdateFlagResponse::_Internal {
+ public:
+};
+
+UpdateFlagResponse::UpdateFlagResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::internal::ZeroFieldsBase(arena) {
+  // @@protoc_insertion_point(arena_constructor:oteldemo.UpdateFlagResponse)
+}
+UpdateFlagResponse::UpdateFlagResponse(const UpdateFlagResponse& from) : ::google::protobuf::internal::ZeroFieldsBase() {
+  UpdateFlagResponse* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.UpdateFlagResponse)
+}
+
+
+
+
+const ::google::protobuf::Message::ClassData UpdateFlagResponse::_class_data_ = {
+    ::google::protobuf::internal::ZeroFieldsBase::CopyImpl,
+    ::google::protobuf::internal::ZeroFieldsBase::MergeImpl,
+};
+const ::google::protobuf::Message::ClassData*UpdateFlagResponse::GetClassData() const { return &_class_data_; }
+
+
+
+
+
+
+
+::google::protobuf::Metadata UpdateFlagResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[38]);
+}
+// ===================================================================
+
+class ListFlagsRequest::_Internal {
+ public:
+};
+
+ListFlagsRequest::ListFlagsRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::internal::ZeroFieldsBase(arena) {
+  // @@protoc_insertion_point(arena_constructor:oteldemo.ListFlagsRequest)
+}
+ListFlagsRequest::ListFlagsRequest(const ListFlagsRequest& from) : ::google::protobuf::internal::ZeroFieldsBase() {
+  ListFlagsRequest* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.ListFlagsRequest)
+}
+
+
+
+
+const ::google::protobuf::Message::ClassData ListFlagsRequest::_class_data_ = {
+    ::google::protobuf::internal::ZeroFieldsBase::CopyImpl,
+    ::google::protobuf::internal::ZeroFieldsBase::MergeImpl,
+};
+const ::google::protobuf::Message::ClassData*ListFlagsRequest::GetClassData() const { return &_class_data_; }
+
+
+
+
+
+
+
+::google::protobuf::Metadata ListFlagsRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[39]);
+}
+// ===================================================================
+
+class ListFlagsResponse::_Internal {
+ public:
+};
+
+ListFlagsResponse::ListFlagsResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.ListFlagsResponse)
+}
+ListFlagsResponse::ListFlagsResponse(const ListFlagsResponse& from) : ::google::protobuf::Message() {
+  ListFlagsResponse* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.flag_){from._impl_.flag_},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.ListFlagsResponse)
+}
+inline void ListFlagsResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.flag_){arena},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+}
+ListFlagsResponse::~ListFlagsResponse() {
+  // @@protoc_insertion_point(destructor:oteldemo.ListFlagsResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void ListFlagsResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.flag_.~RepeatedPtrField();
+}
+void ListFlagsResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void ListFlagsResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.ListFlagsResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _internal_mutable_flag()->Clear();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* ListFlagsResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 1, 0, 2> ListFlagsResponse::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    1,  // num_aux_entries
+    offsetof(decltype(_table_), aux_entries),
+    &_ListFlagsResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // repeated .oteldemo.Flag flag = 1;
+    {::_pbi::TcParser::FastMtR1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(ListFlagsResponse, _impl_.flag_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // repeated .oteldemo.Flag flag = 1;
+    {PROTOBUF_FIELD_OFFSET(ListFlagsResponse, _impl_.flag_), 0, 0,
+    (0 | ::_fl::kFcRepeated | ::_fl::kMessage | ::_fl::kTvTable)},
+  }}, {{
+    {::_pbi::TcParser::GetTable<::oteldemo::Flag>()},
+  }}, {{
+  }},
+};
+
+::uint8_t* ListFlagsResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.ListFlagsResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // repeated .oteldemo.Flag flag = 1;
+  for (unsigned i = 0,
+      n = static_cast<unsigned>(this->_internal_flag_size()); i < n; i++) {
+    const auto& repfield = this->_internal_flag().Get(i);
+    target = ::google::protobuf::internal::WireFormatLite::
+        InternalWriteMessage(1, repfield, repfield.GetCachedSize(), target, stream);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.ListFlagsResponse)
+  return target;
+}
+
+::size_t ListFlagsResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.ListFlagsResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // repeated .oteldemo.Flag flag = 1;
+  total_size += 1UL * this->_internal_flag_size();
+  for (const auto& msg : this->_internal_flag()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormatLite::MessageSize(msg);
+  }
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData ListFlagsResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    ListFlagsResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*ListFlagsResponse::GetClassData() const { return &_class_data_; }
+
+
+void ListFlagsResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<ListFlagsResponse*>(&to_msg);
+  auto& from = static_cast<const ListFlagsResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.ListFlagsResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  _this->_internal_mutable_flag()->MergeFrom(from._internal_flag());
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ListFlagsResponse::CopyFrom(const ListFlagsResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.ListFlagsResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool ListFlagsResponse::IsInitialized() const {
+  return true;
+}
+
+void ListFlagsResponse::InternalSwap(ListFlagsResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  _impl_.flag_.InternalSwap(&other->_impl_.flag_);
+}
+
+::google::protobuf::Metadata ListFlagsResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[40]);
+}
+// ===================================================================
+
+class DeleteFlagRequest::_Internal {
+ public:
+};
+
+DeleteFlagRequest::DeleteFlagRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:oteldemo.DeleteFlagRequest)
+}
+DeleteFlagRequest::DeleteFlagRequest(const DeleteFlagRequest& from) : ::google::protobuf::Message() {
+  DeleteFlagRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_name().empty()) {
+    _this->_impl_.name_.Set(from._internal_name(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.DeleteFlagRequest)
+}
+inline void DeleteFlagRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.name_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.name_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.name_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+DeleteFlagRequest::~DeleteFlagRequest() {
+  // @@protoc_insertion_point(destructor:oteldemo.DeleteFlagRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void DeleteFlagRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.name_.Destroy();
+}
+void DeleteFlagRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void DeleteFlagRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:oteldemo.DeleteFlagRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.name_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* DeleteFlagRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 39, 2> DeleteFlagRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_DeleteFlagRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string name = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(DeleteFlagRequest, _impl_.name_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string name = 1;
+    {PROTOBUF_FIELD_OFFSET(DeleteFlagRequest, _impl_.name_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\32\4\0\0\0\0\0\0"
+    "oteldemo.DeleteFlagRequest"
+    "name"
+  }},
+};
+
+::uint8_t* DeleteFlagRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:oteldemo.DeleteFlagRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    const std::string& _s = this->_internal_name();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "oteldemo.DeleteFlagRequest.name");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:oteldemo.DeleteFlagRequest)
+  return target;
+}
+
+::size_t DeleteFlagRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:oteldemo.DeleteFlagRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string name = 1;
+  if (!this->_internal_name().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_name());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData DeleteFlagRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    DeleteFlagRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*DeleteFlagRequest::GetClassData() const { return &_class_data_; }
+
+
+void DeleteFlagRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<DeleteFlagRequest*>(&to_msg);
+  auto& from = static_cast<const DeleteFlagRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:oteldemo.DeleteFlagRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_name().empty()) {
+    _this->_internal_set_name(from._internal_name());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void DeleteFlagRequest::CopyFrom(const DeleteFlagRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:oteldemo.DeleteFlagRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool DeleteFlagRequest::IsInitialized() const {
+  return true;
+}
+
+void DeleteFlagRequest::InternalSwap(DeleteFlagRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.name_, lhs_arena,
+                                       &other->_impl_.name_, rhs_arena);
+}
+
+::google::protobuf::Metadata DeleteFlagRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[41]);
+}
+// ===================================================================
+
+class DeleteFlagResponse::_Internal {
+ public:
+};
+
+DeleteFlagResponse::DeleteFlagResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::internal::ZeroFieldsBase(arena) {
+  // @@protoc_insertion_point(arena_constructor:oteldemo.DeleteFlagResponse)
+}
+DeleteFlagResponse::DeleteFlagResponse(const DeleteFlagResponse& from) : ::google::protobuf::internal::ZeroFieldsBase() {
+  DeleteFlagResponse* const _this = this;
+  (void)_this;
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+
+  // @@protoc_insertion_point(copy_constructor:oteldemo.DeleteFlagResponse)
+}
+
+
+
+
+const ::google::protobuf::Message::ClassData DeleteFlagResponse::_class_data_ = {
+    ::google::protobuf::internal::ZeroFieldsBase::CopyImpl,
+    ::google::protobuf::internal::ZeroFieldsBase::MergeImpl,
+};
+const ::google::protobuf::Message::ClassData*DeleteFlagResponse::GetClassData() const { return &_class_data_; }
+
+
+
+
+
+
+
+::google::protobuf::Metadata DeleteFlagResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_demo_2eproto_getter, &descriptor_table_demo_2eproto_once,
+      file_level_metadata_demo_2eproto[42]);
+}
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace oteldemo
+namespace google {
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+// @@protoc_insertion_point(global_scope)
+#include "google/protobuf/port_undef.inc"
diff --git a/src/currency/build/generated/proto/demo.pb.h b/src/currency/build/generated/proto/demo.pb.h
new file mode 100644
index 0000000..c7174c1
--- /dev/null
+++ b/src/currency/build/generated/proto/demo.pb.h
@@ -0,0 +1,12655 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: demo.proto
+
+#ifndef GOOGLE_PROTOBUF_INCLUDED_demo_2eproto_2epb_2eh
+#define GOOGLE_PROTOBUF_INCLUDED_demo_2eproto_2epb_2eh
+
+#include <limits>
+#include <string>
+#include <type_traits>
+
+#include "google/protobuf/port_def.inc"
+#if PROTOBUF_VERSION < 4024000
+#error "This file was generated by a newer version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please update"
+#error "your headers."
+#endif  // PROTOBUF_VERSION
+
+#if 4024004 < PROTOBUF_MIN_PROTOC_VERSION
+#error "This file was generated by an older version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please"
+#error "regenerate this file with a newer version of protoc."
+#endif  // PROTOBUF_MIN_PROTOC_VERSION
+#include "google/protobuf/port_undef.inc"
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/arena.h"
+#include "google/protobuf/arenastring.h"
+#include "google/protobuf/generated_message_bases.h"
+#include "google/protobuf/generated_message_tctable_decl.h"
+#include "google/protobuf/generated_message_util.h"
+#include "google/protobuf/metadata_lite.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/message.h"
+#include "google/protobuf/repeated_field.h"  // IWYU pragma: export
+#include "google/protobuf/extension_set.h"  // IWYU pragma: export
+#include "google/protobuf/unknown_field_set.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+
+#define PROTOBUF_INTERNAL_EXPORT_demo_2eproto
+
+namespace google {
+namespace protobuf {
+namespace internal {
+class AnyMetadata;
+}  // namespace internal
+}  // namespace protobuf
+}  // namespace google
+
+// Internal implementation detail -- do not use these members.
+struct TableStruct_demo_2eproto {
+  static const ::uint32_t offsets[];
+};
+extern const ::google::protobuf::internal::DescriptorTable
+    descriptor_table_demo_2eproto;
+namespace oteldemo {
+class Ad;
+struct AdDefaultTypeInternal;
+extern AdDefaultTypeInternal _Ad_default_instance_;
+class AdRequest;
+struct AdRequestDefaultTypeInternal;
+extern AdRequestDefaultTypeInternal _AdRequest_default_instance_;
+class AdResponse;
+struct AdResponseDefaultTypeInternal;
+extern AdResponseDefaultTypeInternal _AdResponse_default_instance_;
+class AddItemRequest;
+struct AddItemRequestDefaultTypeInternal;
+extern AddItemRequestDefaultTypeInternal _AddItemRequest_default_instance_;
+class Address;
+struct AddressDefaultTypeInternal;
+extern AddressDefaultTypeInternal _Address_default_instance_;
+class Cart;
+struct CartDefaultTypeInternal;
+extern CartDefaultTypeInternal _Cart_default_instance_;
+class CartItem;
+struct CartItemDefaultTypeInternal;
+extern CartItemDefaultTypeInternal _CartItem_default_instance_;
+class ChargeRequest;
+struct ChargeRequestDefaultTypeInternal;
+extern ChargeRequestDefaultTypeInternal _ChargeRequest_default_instance_;
+class ChargeResponse;
+struct ChargeResponseDefaultTypeInternal;
+extern ChargeResponseDefaultTypeInternal _ChargeResponse_default_instance_;
+class CreateFlagRequest;
+struct CreateFlagRequestDefaultTypeInternal;
+extern CreateFlagRequestDefaultTypeInternal _CreateFlagRequest_default_instance_;
+class CreateFlagResponse;
+struct CreateFlagResponseDefaultTypeInternal;
+extern CreateFlagResponseDefaultTypeInternal _CreateFlagResponse_default_instance_;
+class CreditCardInfo;
+struct CreditCardInfoDefaultTypeInternal;
+extern CreditCardInfoDefaultTypeInternal _CreditCardInfo_default_instance_;
+class CurrencyConversionRequest;
+struct CurrencyConversionRequestDefaultTypeInternal;
+extern CurrencyConversionRequestDefaultTypeInternal _CurrencyConversionRequest_default_instance_;
+class DeleteFlagRequest;
+struct DeleteFlagRequestDefaultTypeInternal;
+extern DeleteFlagRequestDefaultTypeInternal _DeleteFlagRequest_default_instance_;
+class DeleteFlagResponse;
+struct DeleteFlagResponseDefaultTypeInternal;
+extern DeleteFlagResponseDefaultTypeInternal _DeleteFlagResponse_default_instance_;
+class Empty;
+struct EmptyDefaultTypeInternal;
+extern EmptyDefaultTypeInternal _Empty_default_instance_;
+class EmptyCartRequest;
+struct EmptyCartRequestDefaultTypeInternal;
+extern EmptyCartRequestDefaultTypeInternal _EmptyCartRequest_default_instance_;
+class Flag;
+struct FlagDefaultTypeInternal;
+extern FlagDefaultTypeInternal _Flag_default_instance_;
+class GetCartRequest;
+struct GetCartRequestDefaultTypeInternal;
+extern GetCartRequestDefaultTypeInternal _GetCartRequest_default_instance_;
+class GetFlagRequest;
+struct GetFlagRequestDefaultTypeInternal;
+extern GetFlagRequestDefaultTypeInternal _GetFlagRequest_default_instance_;
+class GetFlagResponse;
+struct GetFlagResponseDefaultTypeInternal;
+extern GetFlagResponseDefaultTypeInternal _GetFlagResponse_default_instance_;
+class GetProductRequest;
+struct GetProductRequestDefaultTypeInternal;
+extern GetProductRequestDefaultTypeInternal _GetProductRequest_default_instance_;
+class GetQuoteRequest;
+struct GetQuoteRequestDefaultTypeInternal;
+extern GetQuoteRequestDefaultTypeInternal _GetQuoteRequest_default_instance_;
+class GetQuoteResponse;
+struct GetQuoteResponseDefaultTypeInternal;
+extern GetQuoteResponseDefaultTypeInternal _GetQuoteResponse_default_instance_;
+class GetSupportedCurrenciesResponse;
+struct GetSupportedCurrenciesResponseDefaultTypeInternal;
+extern GetSupportedCurrenciesResponseDefaultTypeInternal _GetSupportedCurrenciesResponse_default_instance_;
+class ListFlagsRequest;
+struct ListFlagsRequestDefaultTypeInternal;
+extern ListFlagsRequestDefaultTypeInternal _ListFlagsRequest_default_instance_;
+class ListFlagsResponse;
+struct ListFlagsResponseDefaultTypeInternal;
+extern ListFlagsResponseDefaultTypeInternal _ListFlagsResponse_default_instance_;
+class ListProductsResponse;
+struct ListProductsResponseDefaultTypeInternal;
+extern ListProductsResponseDefaultTypeInternal _ListProductsResponse_default_instance_;
+class ListRecommendationsRequest;
+struct ListRecommendationsRequestDefaultTypeInternal;
+extern ListRecommendationsRequestDefaultTypeInternal _ListRecommendationsRequest_default_instance_;
+class ListRecommendationsResponse;
+struct ListRecommendationsResponseDefaultTypeInternal;
+extern ListRecommendationsResponseDefaultTypeInternal _ListRecommendationsResponse_default_instance_;
+class Money;
+struct MoneyDefaultTypeInternal;
+extern MoneyDefaultTypeInternal _Money_default_instance_;
+class OrderItem;
+struct OrderItemDefaultTypeInternal;
+extern OrderItemDefaultTypeInternal _OrderItem_default_instance_;
+class OrderResult;
+struct OrderResultDefaultTypeInternal;
+extern OrderResultDefaultTypeInternal _OrderResult_default_instance_;
+class PlaceOrderRequest;
+struct PlaceOrderRequestDefaultTypeInternal;
+extern PlaceOrderRequestDefaultTypeInternal _PlaceOrderRequest_default_instance_;
+class PlaceOrderResponse;
+struct PlaceOrderResponseDefaultTypeInternal;
+extern PlaceOrderResponseDefaultTypeInternal _PlaceOrderResponse_default_instance_;
+class Product;
+struct ProductDefaultTypeInternal;
+extern ProductDefaultTypeInternal _Product_default_instance_;
+class SearchProductsRequest;
+struct SearchProductsRequestDefaultTypeInternal;
+extern SearchProductsRequestDefaultTypeInternal _SearchProductsRequest_default_instance_;
+class SearchProductsResponse;
+struct SearchProductsResponseDefaultTypeInternal;
+extern SearchProductsResponseDefaultTypeInternal _SearchProductsResponse_default_instance_;
+class SendOrderConfirmationRequest;
+struct SendOrderConfirmationRequestDefaultTypeInternal;
+extern SendOrderConfirmationRequestDefaultTypeInternal _SendOrderConfirmationRequest_default_instance_;
+class ShipOrderRequest;
+struct ShipOrderRequestDefaultTypeInternal;
+extern ShipOrderRequestDefaultTypeInternal _ShipOrderRequest_default_instance_;
+class ShipOrderResponse;
+struct ShipOrderResponseDefaultTypeInternal;
+extern ShipOrderResponseDefaultTypeInternal _ShipOrderResponse_default_instance_;
+class UpdateFlagRequest;
+struct UpdateFlagRequestDefaultTypeInternal;
+extern UpdateFlagRequestDefaultTypeInternal _UpdateFlagRequest_default_instance_;
+class UpdateFlagResponse;
+struct UpdateFlagResponseDefaultTypeInternal;
+extern UpdateFlagResponseDefaultTypeInternal _UpdateFlagResponse_default_instance_;
+}  // namespace oteldemo
+namespace google {
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+
+namespace oteldemo {
+
+// ===================================================================
+
+
+// -------------------------------------------------------------------
+
+class CartItem final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.CartItem) */ {
+ public:
+  inline CartItem() : CartItem(nullptr) {}
+  ~CartItem() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR CartItem(::google::protobuf::internal::ConstantInitialized);
+
+  CartItem(const CartItem& from);
+  CartItem(CartItem&& from) noexcept
+    : CartItem() {
+    *this = ::std::move(from);
+  }
+
+  inline CartItem& operator=(const CartItem& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline CartItem& operator=(CartItem&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const CartItem& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const CartItem* internal_default_instance() {
+    return reinterpret_cast<const CartItem*>(
+               &_CartItem_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    0;
+
+  friend void swap(CartItem& a, CartItem& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(CartItem* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(CartItem* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  CartItem* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<CartItem>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const CartItem& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const CartItem& from) {
+    CartItem::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(CartItem* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.CartItem";
+  }
+  protected:
+  explicit CartItem(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kProductIdFieldNumber = 1,
+    kQuantityFieldNumber = 2,
+  };
+  // string product_id = 1;
+  void clear_product_id() ;
+  const std::string& product_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_product_id(Arg_&& arg, Args_... args);
+  std::string* mutable_product_id();
+  PROTOBUF_NODISCARD std::string* release_product_id();
+  void set_allocated_product_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_product_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_product_id(
+      const std::string& value);
+  std::string* _internal_mutable_product_id();
+
+  public:
+  // int32 quantity = 2;
+  void clear_quantity() ;
+  ::int32_t quantity() const;
+  void set_quantity(::int32_t value);
+
+  private:
+  ::int32_t _internal_quantity() const;
+  void _internal_set_quantity(::int32_t value);
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.CartItem)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 0, 36, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr product_id_;
+    ::int32_t quantity_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class AddItemRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.AddItemRequest) */ {
+ public:
+  inline AddItemRequest() : AddItemRequest(nullptr) {}
+  ~AddItemRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR AddItemRequest(::google::protobuf::internal::ConstantInitialized);
+
+  AddItemRequest(const AddItemRequest& from);
+  AddItemRequest(AddItemRequest&& from) noexcept
+    : AddItemRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline AddItemRequest& operator=(const AddItemRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline AddItemRequest& operator=(AddItemRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const AddItemRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const AddItemRequest* internal_default_instance() {
+    return reinterpret_cast<const AddItemRequest*>(
+               &_AddItemRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    1;
+
+  friend void swap(AddItemRequest& a, AddItemRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(AddItemRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(AddItemRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  AddItemRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<AddItemRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const AddItemRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const AddItemRequest& from) {
+    AddItemRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(AddItemRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.AddItemRequest";
+  }
+  protected:
+  explicit AddItemRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kUserIdFieldNumber = 1,
+    kItemFieldNumber = 2,
+  };
+  // string user_id = 1;
+  void clear_user_id() ;
+  const std::string& user_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_user_id(Arg_&& arg, Args_... args);
+  std::string* mutable_user_id();
+  PROTOBUF_NODISCARD std::string* release_user_id();
+  void set_allocated_user_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_user_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_user_id(
+      const std::string& value);
+  std::string* _internal_mutable_user_id();
+
+  public:
+  // .oteldemo.CartItem item = 2;
+  bool has_item() const;
+  void clear_item() ;
+  const ::oteldemo::CartItem& item() const;
+  PROTOBUF_NODISCARD ::oteldemo::CartItem* release_item();
+  ::oteldemo::CartItem* mutable_item();
+  void set_allocated_item(::oteldemo::CartItem* value);
+  void unsafe_arena_set_allocated_item(::oteldemo::CartItem* value);
+  ::oteldemo::CartItem* unsafe_arena_release_item();
+
+  private:
+  const ::oteldemo::CartItem& _internal_item() const;
+  ::oteldemo::CartItem* _internal_mutable_item();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.AddItemRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 1, 39, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::internal::ArenaStringPtr user_id_;
+    ::oteldemo::CartItem* item_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class EmptyCartRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.EmptyCartRequest) */ {
+ public:
+  inline EmptyCartRequest() : EmptyCartRequest(nullptr) {}
+  ~EmptyCartRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR EmptyCartRequest(::google::protobuf::internal::ConstantInitialized);
+
+  EmptyCartRequest(const EmptyCartRequest& from);
+  EmptyCartRequest(EmptyCartRequest&& from) noexcept
+    : EmptyCartRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline EmptyCartRequest& operator=(const EmptyCartRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline EmptyCartRequest& operator=(EmptyCartRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const EmptyCartRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const EmptyCartRequest* internal_default_instance() {
+    return reinterpret_cast<const EmptyCartRequest*>(
+               &_EmptyCartRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    2;
+
+  friend void swap(EmptyCartRequest& a, EmptyCartRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(EmptyCartRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(EmptyCartRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  EmptyCartRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<EmptyCartRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const EmptyCartRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const EmptyCartRequest& from) {
+    EmptyCartRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(EmptyCartRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.EmptyCartRequest";
+  }
+  protected:
+  explicit EmptyCartRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kUserIdFieldNumber = 1,
+  };
+  // string user_id = 1;
+  void clear_user_id() ;
+  const std::string& user_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_user_id(Arg_&& arg, Args_... args);
+  std::string* mutable_user_id();
+  PROTOBUF_NODISCARD std::string* release_user_id();
+  void set_allocated_user_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_user_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_user_id(
+      const std::string& value);
+  std::string* _internal_mutable_user_id();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.EmptyCartRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 41, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr user_id_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class GetCartRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.GetCartRequest) */ {
+ public:
+  inline GetCartRequest() : GetCartRequest(nullptr) {}
+  ~GetCartRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR GetCartRequest(::google::protobuf::internal::ConstantInitialized);
+
+  GetCartRequest(const GetCartRequest& from);
+  GetCartRequest(GetCartRequest&& from) noexcept
+    : GetCartRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline GetCartRequest& operator=(const GetCartRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline GetCartRequest& operator=(GetCartRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const GetCartRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const GetCartRequest* internal_default_instance() {
+    return reinterpret_cast<const GetCartRequest*>(
+               &_GetCartRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    3;
+
+  friend void swap(GetCartRequest& a, GetCartRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(GetCartRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(GetCartRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  GetCartRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<GetCartRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const GetCartRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const GetCartRequest& from) {
+    GetCartRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(GetCartRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.GetCartRequest";
+  }
+  protected:
+  explicit GetCartRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kUserIdFieldNumber = 1,
+  };
+  // string user_id = 1;
+  void clear_user_id() ;
+  const std::string& user_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_user_id(Arg_&& arg, Args_... args);
+  std::string* mutable_user_id();
+  PROTOBUF_NODISCARD std::string* release_user_id();
+  void set_allocated_user_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_user_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_user_id(
+      const std::string& value);
+  std::string* _internal_mutable_user_id();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.GetCartRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 39, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr user_id_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class Cart final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.Cart) */ {
+ public:
+  inline Cart() : Cart(nullptr) {}
+  ~Cart() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Cart(::google::protobuf::internal::ConstantInitialized);
+
+  Cart(const Cart& from);
+  Cart(Cart&& from) noexcept
+    : Cart() {
+    *this = ::std::move(from);
+  }
+
+  inline Cart& operator=(const Cart& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Cart& operator=(Cart&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Cart& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const Cart* internal_default_instance() {
+    return reinterpret_cast<const Cart*>(
+               &_Cart_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    4;
+
+  friend void swap(Cart& a, Cart& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Cart* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Cart* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Cart* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Cart>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const Cart& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const Cart& from) {
+    Cart::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(Cart* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.Cart";
+  }
+  protected:
+  explicit Cart(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kItemsFieldNumber = 2,
+    kUserIdFieldNumber = 1,
+  };
+  // repeated .oteldemo.CartItem items = 2;
+  int items_size() const;
+  private:
+  int _internal_items_size() const;
+
+  public:
+  void clear_items() ;
+  ::oteldemo::CartItem* mutable_items(int index);
+  ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >*
+      mutable_items();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>& _internal_items() const;
+  ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>* _internal_mutable_items();
+  public:
+  const ::oteldemo::CartItem& items(int index) const;
+  ::oteldemo::CartItem* add_items();
+  const ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >&
+      items() const;
+  // string user_id = 1;
+  void clear_user_id() ;
+  const std::string& user_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_user_id(Arg_&& arg, Args_... args);
+  std::string* mutable_user_id();
+  PROTOBUF_NODISCARD std::string* release_user_id();
+  void set_allocated_user_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_user_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_user_id(
+      const std::string& value);
+  std::string* _internal_mutable_user_id();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.Cart)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 1, 29, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem > items_;
+    ::google::protobuf::internal::ArenaStringPtr user_id_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class Empty final :
+    public ::google::protobuf::internal::ZeroFieldsBase /* @@protoc_insertion_point(class_definition:oteldemo.Empty) */ {
+ public:
+  inline Empty() : Empty(nullptr) {}
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Empty(::google::protobuf::internal::ConstantInitialized);
+
+  Empty(const Empty& from);
+  Empty(Empty&& from) noexcept
+    : Empty() {
+    *this = ::std::move(from);
+  }
+
+  inline Empty& operator=(const Empty& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Empty& operator=(Empty&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Empty& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const Empty* internal_default_instance() {
+    return reinterpret_cast<const Empty*>(
+               &_Empty_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    5;
+
+  friend void swap(Empty& a, Empty& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Empty* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Empty* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Empty* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Empty>(arena);
+  }
+  using ::google::protobuf::internal::ZeroFieldsBase::CopyFrom;
+  inline void CopyFrom(const Empty& from) {
+    ::google::protobuf::internal::ZeroFieldsBase::CopyImpl(*this, from);
+  }
+  using ::google::protobuf::internal::ZeroFieldsBase::MergeFrom;
+  void MergeFrom(const Empty& from) {
+    ::google::protobuf::internal::ZeroFieldsBase::MergeImpl(*this, from);
+  }
+  public:
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.Empty";
+  }
+  protected:
+  explicit Empty(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // @@protoc_insertion_point(class_scope:oteldemo.Empty)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class ListRecommendationsRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.ListRecommendationsRequest) */ {
+ public:
+  inline ListRecommendationsRequest() : ListRecommendationsRequest(nullptr) {}
+  ~ListRecommendationsRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ListRecommendationsRequest(::google::protobuf::internal::ConstantInitialized);
+
+  ListRecommendationsRequest(const ListRecommendationsRequest& from);
+  ListRecommendationsRequest(ListRecommendationsRequest&& from) noexcept
+    : ListRecommendationsRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline ListRecommendationsRequest& operator=(const ListRecommendationsRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ListRecommendationsRequest& operator=(ListRecommendationsRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ListRecommendationsRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ListRecommendationsRequest* internal_default_instance() {
+    return reinterpret_cast<const ListRecommendationsRequest*>(
+               &_ListRecommendationsRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    6;
+
+  friend void swap(ListRecommendationsRequest& a, ListRecommendationsRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ListRecommendationsRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ListRecommendationsRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ListRecommendationsRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ListRecommendationsRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ListRecommendationsRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ListRecommendationsRequest& from) {
+    ListRecommendationsRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ListRecommendationsRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.ListRecommendationsRequest";
+  }
+  protected:
+  explicit ListRecommendationsRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kProductIdsFieldNumber = 2,
+    kUserIdFieldNumber = 1,
+  };
+  // repeated string product_ids = 2;
+  int product_ids_size() const;
+  private:
+  int _internal_product_ids_size() const;
+
+  public:
+  void clear_product_ids() ;
+  const std::string& product_ids(int index) const;
+  std::string* mutable_product_ids(int index);
+  void set_product_ids(int index, const std::string& value);
+  void set_product_ids(int index, std::string&& value);
+  void set_product_ids(int index, const char* value);
+  void set_product_ids(int index, const char* value, std::size_t size);
+  void set_product_ids(int index, absl::string_view value);
+  std::string* add_product_ids();
+  void add_product_ids(const std::string& value);
+  void add_product_ids(std::string&& value);
+  void add_product_ids(const char* value);
+  void add_product_ids(const char* value, std::size_t size);
+  void add_product_ids(absl::string_view value);
+  const ::google::protobuf::RepeatedPtrField<std::string>& product_ids() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* mutable_product_ids();
+
+  private:
+  const ::google::protobuf::RepeatedPtrField<std::string>& _internal_product_ids() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* _internal_mutable_product_ids();
+
+  public:
+  // string user_id = 1;
+  void clear_user_id() ;
+  const std::string& user_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_user_id(Arg_&& arg, Args_... args);
+  std::string* mutable_user_id();
+  PROTOBUF_NODISCARD std::string* release_user_id();
+  void set_allocated_user_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_user_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_user_id(
+      const std::string& value);
+  std::string* _internal_mutable_user_id();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.ListRecommendationsRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 0, 62, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::RepeatedPtrField<std::string> product_ids_;
+    ::google::protobuf::internal::ArenaStringPtr user_id_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class ListRecommendationsResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.ListRecommendationsResponse) */ {
+ public:
+  inline ListRecommendationsResponse() : ListRecommendationsResponse(nullptr) {}
+  ~ListRecommendationsResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ListRecommendationsResponse(::google::protobuf::internal::ConstantInitialized);
+
+  ListRecommendationsResponse(const ListRecommendationsResponse& from);
+  ListRecommendationsResponse(ListRecommendationsResponse&& from) noexcept
+    : ListRecommendationsResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline ListRecommendationsResponse& operator=(const ListRecommendationsResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ListRecommendationsResponse& operator=(ListRecommendationsResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ListRecommendationsResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ListRecommendationsResponse* internal_default_instance() {
+    return reinterpret_cast<const ListRecommendationsResponse*>(
+               &_ListRecommendationsResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    7;
+
+  friend void swap(ListRecommendationsResponse& a, ListRecommendationsResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ListRecommendationsResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ListRecommendationsResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ListRecommendationsResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ListRecommendationsResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ListRecommendationsResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ListRecommendationsResponse& from) {
+    ListRecommendationsResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ListRecommendationsResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.ListRecommendationsResponse";
+  }
+  protected:
+  explicit ListRecommendationsResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kProductIdsFieldNumber = 1,
+  };
+  // repeated string product_ids = 1;
+  int product_ids_size() const;
+  private:
+  int _internal_product_ids_size() const;
+
+  public:
+  void clear_product_ids() ;
+  const std::string& product_ids(int index) const;
+  std::string* mutable_product_ids(int index);
+  void set_product_ids(int index, const std::string& value);
+  void set_product_ids(int index, std::string&& value);
+  void set_product_ids(int index, const char* value);
+  void set_product_ids(int index, const char* value, std::size_t size);
+  void set_product_ids(int index, absl::string_view value);
+  std::string* add_product_ids();
+  void add_product_ids(const std::string& value);
+  void add_product_ids(std::string&& value);
+  void add_product_ids(const char* value);
+  void add_product_ids(const char* value, std::size_t size);
+  void add_product_ids(absl::string_view value);
+  const ::google::protobuf::RepeatedPtrField<std::string>& product_ids() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* mutable_product_ids();
+
+  private:
+  const ::google::protobuf::RepeatedPtrField<std::string>& _internal_product_ids() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* _internal_mutable_product_ids();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.ListRecommendationsResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 56, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::RepeatedPtrField<std::string> product_ids_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class Product final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.Product) */ {
+ public:
+  inline Product() : Product(nullptr) {}
+  ~Product() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Product(::google::protobuf::internal::ConstantInitialized);
+
+  Product(const Product& from);
+  Product(Product&& from) noexcept
+    : Product() {
+    *this = ::std::move(from);
+  }
+
+  inline Product& operator=(const Product& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Product& operator=(Product&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Product& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const Product* internal_default_instance() {
+    return reinterpret_cast<const Product*>(
+               &_Product_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    8;
+
+  friend void swap(Product& a, Product& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Product* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Product* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Product* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Product>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const Product& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const Product& from) {
+    Product::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(Product* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.Product";
+  }
+  protected:
+  explicit Product(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kCategoriesFieldNumber = 6,
+    kIdFieldNumber = 1,
+    kNameFieldNumber = 2,
+    kDescriptionFieldNumber = 3,
+    kPictureFieldNumber = 4,
+    kPriceUsdFieldNumber = 5,
+  };
+  // repeated string categories = 6;
+  int categories_size() const;
+  private:
+  int _internal_categories_size() const;
+
+  public:
+  void clear_categories() ;
+  const std::string& categories(int index) const;
+  std::string* mutable_categories(int index);
+  void set_categories(int index, const std::string& value);
+  void set_categories(int index, std::string&& value);
+  void set_categories(int index, const char* value);
+  void set_categories(int index, const char* value, std::size_t size);
+  void set_categories(int index, absl::string_view value);
+  std::string* add_categories();
+  void add_categories(const std::string& value);
+  void add_categories(std::string&& value);
+  void add_categories(const char* value);
+  void add_categories(const char* value, std::size_t size);
+  void add_categories(absl::string_view value);
+  const ::google::protobuf::RepeatedPtrField<std::string>& categories() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* mutable_categories();
+
+  private:
+  const ::google::protobuf::RepeatedPtrField<std::string>& _internal_categories() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* _internal_mutable_categories();
+
+  public:
+  // string id = 1;
+  void clear_id() ;
+  const std::string& id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_id(Arg_&& arg, Args_... args);
+  std::string* mutable_id();
+  PROTOBUF_NODISCARD std::string* release_id();
+  void set_allocated_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_id(
+      const std::string& value);
+  std::string* _internal_mutable_id();
+
+  public:
+  // string name = 2;
+  void clear_name() ;
+  const std::string& name() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_name(Arg_&& arg, Args_... args);
+  std::string* mutable_name();
+  PROTOBUF_NODISCARD std::string* release_name();
+  void set_allocated_name(std::string* ptr);
+
+  private:
+  const std::string& _internal_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_name(
+      const std::string& value);
+  std::string* _internal_mutable_name();
+
+  public:
+  // string description = 3;
+  void clear_description() ;
+  const std::string& description() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_description(Arg_&& arg, Args_... args);
+  std::string* mutable_description();
+  PROTOBUF_NODISCARD std::string* release_description();
+  void set_allocated_description(std::string* ptr);
+
+  private:
+  const std::string& _internal_description() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_description(
+      const std::string& value);
+  std::string* _internal_mutable_description();
+
+  public:
+  // string picture = 4;
+  void clear_picture() ;
+  const std::string& picture() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_picture(Arg_&& arg, Args_... args);
+  std::string* mutable_picture();
+  PROTOBUF_NODISCARD std::string* release_picture();
+  void set_allocated_picture(std::string* ptr);
+
+  private:
+  const std::string& _internal_picture() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_picture(
+      const std::string& value);
+  std::string* _internal_mutable_picture();
+
+  public:
+  // .oteldemo.Money price_usd = 5;
+  bool has_price_usd() const;
+  void clear_price_usd() ;
+  const ::oteldemo::Money& price_usd() const;
+  PROTOBUF_NODISCARD ::oteldemo::Money* release_price_usd();
+  ::oteldemo::Money* mutable_price_usd();
+  void set_allocated_price_usd(::oteldemo::Money* value);
+  void unsafe_arena_set_allocated_price_usd(::oteldemo::Money* value);
+  ::oteldemo::Money* unsafe_arena_release_price_usd();
+
+  private:
+  const ::oteldemo::Money& _internal_price_usd() const;
+  ::oteldemo::Money* _internal_mutable_price_usd();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.Product)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<3, 6, 1, 59, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::RepeatedPtrField<std::string> categories_;
+    ::google::protobuf::internal::ArenaStringPtr id_;
+    ::google::protobuf::internal::ArenaStringPtr name_;
+    ::google::protobuf::internal::ArenaStringPtr description_;
+    ::google::protobuf::internal::ArenaStringPtr picture_;
+    ::oteldemo::Money* price_usd_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class ListProductsResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.ListProductsResponse) */ {
+ public:
+  inline ListProductsResponse() : ListProductsResponse(nullptr) {}
+  ~ListProductsResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ListProductsResponse(::google::protobuf::internal::ConstantInitialized);
+
+  ListProductsResponse(const ListProductsResponse& from);
+  ListProductsResponse(ListProductsResponse&& from) noexcept
+    : ListProductsResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline ListProductsResponse& operator=(const ListProductsResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ListProductsResponse& operator=(ListProductsResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ListProductsResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ListProductsResponse* internal_default_instance() {
+    return reinterpret_cast<const ListProductsResponse*>(
+               &_ListProductsResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    9;
+
+  friend void swap(ListProductsResponse& a, ListProductsResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ListProductsResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ListProductsResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ListProductsResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ListProductsResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ListProductsResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ListProductsResponse& from) {
+    ListProductsResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ListProductsResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.ListProductsResponse";
+  }
+  protected:
+  explicit ListProductsResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kProductsFieldNumber = 1,
+  };
+  // repeated .oteldemo.Product products = 1;
+  int products_size() const;
+  private:
+  int _internal_products_size() const;
+
+  public:
+  void clear_products() ;
+  ::oteldemo::Product* mutable_products(int index);
+  ::google::protobuf::RepeatedPtrField< ::oteldemo::Product >*
+      mutable_products();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::oteldemo::Product>& _internal_products() const;
+  ::google::protobuf::RepeatedPtrField<::oteldemo::Product>* _internal_mutable_products();
+  public:
+  const ::oteldemo::Product& products(int index) const;
+  ::oteldemo::Product* add_products();
+  const ::google::protobuf::RepeatedPtrField< ::oteldemo::Product >&
+      products() const;
+  // @@protoc_insertion_point(class_scope:oteldemo.ListProductsResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 1, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::RepeatedPtrField< ::oteldemo::Product > products_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class GetProductRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.GetProductRequest) */ {
+ public:
+  inline GetProductRequest() : GetProductRequest(nullptr) {}
+  ~GetProductRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR GetProductRequest(::google::protobuf::internal::ConstantInitialized);
+
+  GetProductRequest(const GetProductRequest& from);
+  GetProductRequest(GetProductRequest&& from) noexcept
+    : GetProductRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline GetProductRequest& operator=(const GetProductRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline GetProductRequest& operator=(GetProductRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const GetProductRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const GetProductRequest* internal_default_instance() {
+    return reinterpret_cast<const GetProductRequest*>(
+               &_GetProductRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    10;
+
+  friend void swap(GetProductRequest& a, GetProductRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(GetProductRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(GetProductRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  GetProductRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<GetProductRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const GetProductRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const GetProductRequest& from) {
+    GetProductRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(GetProductRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.GetProductRequest";
+  }
+  protected:
+  explicit GetProductRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kIdFieldNumber = 1,
+  };
+  // string id = 1;
+  void clear_id() ;
+  const std::string& id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_id(Arg_&& arg, Args_... args);
+  std::string* mutable_id();
+  PROTOBUF_NODISCARD std::string* release_id();
+  void set_allocated_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_id(
+      const std::string& value);
+  std::string* _internal_mutable_id();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.GetProductRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 37, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr id_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class SearchProductsRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.SearchProductsRequest) */ {
+ public:
+  inline SearchProductsRequest() : SearchProductsRequest(nullptr) {}
+  ~SearchProductsRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR SearchProductsRequest(::google::protobuf::internal::ConstantInitialized);
+
+  SearchProductsRequest(const SearchProductsRequest& from);
+  SearchProductsRequest(SearchProductsRequest&& from) noexcept
+    : SearchProductsRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline SearchProductsRequest& operator=(const SearchProductsRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline SearchProductsRequest& operator=(SearchProductsRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const SearchProductsRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const SearchProductsRequest* internal_default_instance() {
+    return reinterpret_cast<const SearchProductsRequest*>(
+               &_SearchProductsRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    11;
+
+  friend void swap(SearchProductsRequest& a, SearchProductsRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(SearchProductsRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(SearchProductsRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  SearchProductsRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<SearchProductsRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const SearchProductsRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const SearchProductsRequest& from) {
+    SearchProductsRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(SearchProductsRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.SearchProductsRequest";
+  }
+  protected:
+  explicit SearchProductsRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kQueryFieldNumber = 1,
+  };
+  // string query = 1;
+  void clear_query() ;
+  const std::string& query() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_query(Arg_&& arg, Args_... args);
+  std::string* mutable_query();
+  PROTOBUF_NODISCARD std::string* release_query();
+  void set_allocated_query(std::string* ptr);
+
+  private:
+  const std::string& _internal_query() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_query(
+      const std::string& value);
+  std::string* _internal_mutable_query();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.SearchProductsRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 44, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr query_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class SearchProductsResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.SearchProductsResponse) */ {
+ public:
+  inline SearchProductsResponse() : SearchProductsResponse(nullptr) {}
+  ~SearchProductsResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR SearchProductsResponse(::google::protobuf::internal::ConstantInitialized);
+
+  SearchProductsResponse(const SearchProductsResponse& from);
+  SearchProductsResponse(SearchProductsResponse&& from) noexcept
+    : SearchProductsResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline SearchProductsResponse& operator=(const SearchProductsResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline SearchProductsResponse& operator=(SearchProductsResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const SearchProductsResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const SearchProductsResponse* internal_default_instance() {
+    return reinterpret_cast<const SearchProductsResponse*>(
+               &_SearchProductsResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    12;
+
+  friend void swap(SearchProductsResponse& a, SearchProductsResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(SearchProductsResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(SearchProductsResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  SearchProductsResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<SearchProductsResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const SearchProductsResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const SearchProductsResponse& from) {
+    SearchProductsResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(SearchProductsResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.SearchProductsResponse";
+  }
+  protected:
+  explicit SearchProductsResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kResultsFieldNumber = 1,
+  };
+  // repeated .oteldemo.Product results = 1;
+  int results_size() const;
+  private:
+  int _internal_results_size() const;
+
+  public:
+  void clear_results() ;
+  ::oteldemo::Product* mutable_results(int index);
+  ::google::protobuf::RepeatedPtrField< ::oteldemo::Product >*
+      mutable_results();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::oteldemo::Product>& _internal_results() const;
+  ::google::protobuf::RepeatedPtrField<::oteldemo::Product>* _internal_mutable_results();
+  public:
+  const ::oteldemo::Product& results(int index) const;
+  ::oteldemo::Product* add_results();
+  const ::google::protobuf::RepeatedPtrField< ::oteldemo::Product >&
+      results() const;
+  // @@protoc_insertion_point(class_scope:oteldemo.SearchProductsResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 1, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::RepeatedPtrField< ::oteldemo::Product > results_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class GetQuoteRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.GetQuoteRequest) */ {
+ public:
+  inline GetQuoteRequest() : GetQuoteRequest(nullptr) {}
+  ~GetQuoteRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR GetQuoteRequest(::google::protobuf::internal::ConstantInitialized);
+
+  GetQuoteRequest(const GetQuoteRequest& from);
+  GetQuoteRequest(GetQuoteRequest&& from) noexcept
+    : GetQuoteRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline GetQuoteRequest& operator=(const GetQuoteRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline GetQuoteRequest& operator=(GetQuoteRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const GetQuoteRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const GetQuoteRequest* internal_default_instance() {
+    return reinterpret_cast<const GetQuoteRequest*>(
+               &_GetQuoteRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    13;
+
+  friend void swap(GetQuoteRequest& a, GetQuoteRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(GetQuoteRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(GetQuoteRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  GetQuoteRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<GetQuoteRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const GetQuoteRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const GetQuoteRequest& from) {
+    GetQuoteRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(GetQuoteRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.GetQuoteRequest";
+  }
+  protected:
+  explicit GetQuoteRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kItemsFieldNumber = 2,
+    kAddressFieldNumber = 1,
+  };
+  // repeated .oteldemo.CartItem items = 2;
+  int items_size() const;
+  private:
+  int _internal_items_size() const;
+
+  public:
+  void clear_items() ;
+  ::oteldemo::CartItem* mutable_items(int index);
+  ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >*
+      mutable_items();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>& _internal_items() const;
+  ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>* _internal_mutable_items();
+  public:
+  const ::oteldemo::CartItem& items(int index) const;
+  ::oteldemo::CartItem* add_items();
+  const ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >&
+      items() const;
+  // .oteldemo.Address address = 1;
+  bool has_address() const;
+  void clear_address() ;
+  const ::oteldemo::Address& address() const;
+  PROTOBUF_NODISCARD ::oteldemo::Address* release_address();
+  ::oteldemo::Address* mutable_address();
+  void set_allocated_address(::oteldemo::Address* value);
+  void unsafe_arena_set_allocated_address(::oteldemo::Address* value);
+  ::oteldemo::Address* unsafe_arena_release_address();
+
+  private:
+  const ::oteldemo::Address& _internal_address() const;
+  ::oteldemo::Address* _internal_mutable_address();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.GetQuoteRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 2, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem > items_;
+    ::oteldemo::Address* address_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class GetQuoteResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.GetQuoteResponse) */ {
+ public:
+  inline GetQuoteResponse() : GetQuoteResponse(nullptr) {}
+  ~GetQuoteResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR GetQuoteResponse(::google::protobuf::internal::ConstantInitialized);
+
+  GetQuoteResponse(const GetQuoteResponse& from);
+  GetQuoteResponse(GetQuoteResponse&& from) noexcept
+    : GetQuoteResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline GetQuoteResponse& operator=(const GetQuoteResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline GetQuoteResponse& operator=(GetQuoteResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const GetQuoteResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const GetQuoteResponse* internal_default_instance() {
+    return reinterpret_cast<const GetQuoteResponse*>(
+               &_GetQuoteResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    14;
+
+  friend void swap(GetQuoteResponse& a, GetQuoteResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(GetQuoteResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(GetQuoteResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  GetQuoteResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<GetQuoteResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const GetQuoteResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const GetQuoteResponse& from) {
+    GetQuoteResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(GetQuoteResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.GetQuoteResponse";
+  }
+  protected:
+  explicit GetQuoteResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kCostUsdFieldNumber = 1,
+  };
+  // .oteldemo.Money cost_usd = 1;
+  bool has_cost_usd() const;
+  void clear_cost_usd() ;
+  const ::oteldemo::Money& cost_usd() const;
+  PROTOBUF_NODISCARD ::oteldemo::Money* release_cost_usd();
+  ::oteldemo::Money* mutable_cost_usd();
+  void set_allocated_cost_usd(::oteldemo::Money* value);
+  void unsafe_arena_set_allocated_cost_usd(::oteldemo::Money* value);
+  ::oteldemo::Money* unsafe_arena_release_cost_usd();
+
+  private:
+  const ::oteldemo::Money& _internal_cost_usd() const;
+  ::oteldemo::Money* _internal_mutable_cost_usd();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.GetQuoteResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 1, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::oteldemo::Money* cost_usd_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class ShipOrderRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.ShipOrderRequest) */ {
+ public:
+  inline ShipOrderRequest() : ShipOrderRequest(nullptr) {}
+  ~ShipOrderRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ShipOrderRequest(::google::protobuf::internal::ConstantInitialized);
+
+  ShipOrderRequest(const ShipOrderRequest& from);
+  ShipOrderRequest(ShipOrderRequest&& from) noexcept
+    : ShipOrderRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline ShipOrderRequest& operator=(const ShipOrderRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ShipOrderRequest& operator=(ShipOrderRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ShipOrderRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ShipOrderRequest* internal_default_instance() {
+    return reinterpret_cast<const ShipOrderRequest*>(
+               &_ShipOrderRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    15;
+
+  friend void swap(ShipOrderRequest& a, ShipOrderRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ShipOrderRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ShipOrderRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ShipOrderRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ShipOrderRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ShipOrderRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ShipOrderRequest& from) {
+    ShipOrderRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ShipOrderRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.ShipOrderRequest";
+  }
+  protected:
+  explicit ShipOrderRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kItemsFieldNumber = 2,
+    kAddressFieldNumber = 1,
+  };
+  // repeated .oteldemo.CartItem items = 2;
+  int items_size() const;
+  private:
+  int _internal_items_size() const;
+
+  public:
+  void clear_items() ;
+  ::oteldemo::CartItem* mutable_items(int index);
+  ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >*
+      mutable_items();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>& _internal_items() const;
+  ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>* _internal_mutable_items();
+  public:
+  const ::oteldemo::CartItem& items(int index) const;
+  ::oteldemo::CartItem* add_items();
+  const ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >&
+      items() const;
+  // .oteldemo.Address address = 1;
+  bool has_address() const;
+  void clear_address() ;
+  const ::oteldemo::Address& address() const;
+  PROTOBUF_NODISCARD ::oteldemo::Address* release_address();
+  ::oteldemo::Address* mutable_address();
+  void set_allocated_address(::oteldemo::Address* value);
+  void unsafe_arena_set_allocated_address(::oteldemo::Address* value);
+  ::oteldemo::Address* unsafe_arena_release_address();
+
+  private:
+  const ::oteldemo::Address& _internal_address() const;
+  ::oteldemo::Address* _internal_mutable_address();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.ShipOrderRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 2, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem > items_;
+    ::oteldemo::Address* address_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class ShipOrderResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.ShipOrderResponse) */ {
+ public:
+  inline ShipOrderResponse() : ShipOrderResponse(nullptr) {}
+  ~ShipOrderResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ShipOrderResponse(::google::protobuf::internal::ConstantInitialized);
+
+  ShipOrderResponse(const ShipOrderResponse& from);
+  ShipOrderResponse(ShipOrderResponse&& from) noexcept
+    : ShipOrderResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline ShipOrderResponse& operator=(const ShipOrderResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ShipOrderResponse& operator=(ShipOrderResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ShipOrderResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ShipOrderResponse* internal_default_instance() {
+    return reinterpret_cast<const ShipOrderResponse*>(
+               &_ShipOrderResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    16;
+
+  friend void swap(ShipOrderResponse& a, ShipOrderResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ShipOrderResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ShipOrderResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ShipOrderResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ShipOrderResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ShipOrderResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ShipOrderResponse& from) {
+    ShipOrderResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ShipOrderResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.ShipOrderResponse";
+  }
+  protected:
+  explicit ShipOrderResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kTrackingIdFieldNumber = 1,
+  };
+  // string tracking_id = 1;
+  void clear_tracking_id() ;
+  const std::string& tracking_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_tracking_id(Arg_&& arg, Args_... args);
+  std::string* mutable_tracking_id();
+  PROTOBUF_NODISCARD std::string* release_tracking_id();
+  void set_allocated_tracking_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_tracking_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_tracking_id(
+      const std::string& value);
+  std::string* _internal_mutable_tracking_id();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.ShipOrderResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 46, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr tracking_id_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class Address final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.Address) */ {
+ public:
+  inline Address() : Address(nullptr) {}
+  ~Address() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Address(::google::protobuf::internal::ConstantInitialized);
+
+  Address(const Address& from);
+  Address(Address&& from) noexcept
+    : Address() {
+    *this = ::std::move(from);
+  }
+
+  inline Address& operator=(const Address& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Address& operator=(Address&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Address& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const Address* internal_default_instance() {
+    return reinterpret_cast<const Address*>(
+               &_Address_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    17;
+
+  friend void swap(Address& a, Address& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Address* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Address* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Address* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Address>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const Address& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const Address& from) {
+    Address::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(Address* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.Address";
+  }
+  protected:
+  explicit Address(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kStreetAddressFieldNumber = 1,
+    kCityFieldNumber = 2,
+    kStateFieldNumber = 3,
+    kCountryFieldNumber = 4,
+    kZipCodeFieldNumber = 5,
+  };
+  // string street_address = 1;
+  void clear_street_address() ;
+  const std::string& street_address() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_street_address(Arg_&& arg, Args_... args);
+  std::string* mutable_street_address();
+  PROTOBUF_NODISCARD std::string* release_street_address();
+  void set_allocated_street_address(std::string* ptr);
+
+  private:
+  const std::string& _internal_street_address() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_street_address(
+      const std::string& value);
+  std::string* _internal_mutable_street_address();
+
+  public:
+  // string city = 2;
+  void clear_city() ;
+  const std::string& city() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_city(Arg_&& arg, Args_... args);
+  std::string* mutable_city();
+  PROTOBUF_NODISCARD std::string* release_city();
+  void set_allocated_city(std::string* ptr);
+
+  private:
+  const std::string& _internal_city() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_city(
+      const std::string& value);
+  std::string* _internal_mutable_city();
+
+  public:
+  // string state = 3;
+  void clear_state() ;
+  const std::string& state() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_state(Arg_&& arg, Args_... args);
+  std::string* mutable_state();
+  PROTOBUF_NODISCARD std::string* release_state();
+  void set_allocated_state(std::string* ptr);
+
+  private:
+  const std::string& _internal_state() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_state(
+      const std::string& value);
+  std::string* _internal_mutable_state();
+
+  public:
+  // string country = 4;
+  void clear_country() ;
+  const std::string& country() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_country(Arg_&& arg, Args_... args);
+  std::string* mutable_country();
+  PROTOBUF_NODISCARD std::string* release_country();
+  void set_allocated_country(std::string* ptr);
+
+  private:
+  const std::string& _internal_country() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_country(
+      const std::string& value);
+  std::string* _internal_mutable_country();
+
+  public:
+  // string zip_code = 5;
+  void clear_zip_code() ;
+  const std::string& zip_code() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_zip_code(Arg_&& arg, Args_... args);
+  std::string* mutable_zip_code();
+  PROTOBUF_NODISCARD std::string* release_zip_code();
+  void set_allocated_zip_code(std::string* ptr);
+
+  private:
+  const std::string& _internal_zip_code() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_zip_code(
+      const std::string& value);
+  std::string* _internal_mutable_zip_code();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.Address)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<3, 5, 0, 63, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr street_address_;
+    ::google::protobuf::internal::ArenaStringPtr city_;
+    ::google::protobuf::internal::ArenaStringPtr state_;
+    ::google::protobuf::internal::ArenaStringPtr country_;
+    ::google::protobuf::internal::ArenaStringPtr zip_code_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class Money final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.Money) */ {
+ public:
+  inline Money() : Money(nullptr) {}
+  ~Money() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Money(::google::protobuf::internal::ConstantInitialized);
+
+  Money(const Money& from);
+  Money(Money&& from) noexcept
+    : Money() {
+    *this = ::std::move(from);
+  }
+
+  inline Money& operator=(const Money& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Money& operator=(Money&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Money& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const Money* internal_default_instance() {
+    return reinterpret_cast<const Money*>(
+               &_Money_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    18;
+
+  friend void swap(Money& a, Money& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Money* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Money* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Money* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Money>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const Money& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const Money& from) {
+    Money::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(Money* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.Money";
+  }
+  protected:
+  explicit Money(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kCurrencyCodeFieldNumber = 1,
+    kUnitsFieldNumber = 2,
+    kNanosFieldNumber = 3,
+  };
+  // string currency_code = 1;
+  void clear_currency_code() ;
+  const std::string& currency_code() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_currency_code(Arg_&& arg, Args_... args);
+  std::string* mutable_currency_code();
+  PROTOBUF_NODISCARD std::string* release_currency_code();
+  void set_allocated_currency_code(std::string* ptr);
+
+  private:
+  const std::string& _internal_currency_code() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_currency_code(
+      const std::string& value);
+  std::string* _internal_mutable_currency_code();
+
+  public:
+  // int64 units = 2;
+  void clear_units() ;
+  ::int64_t units() const;
+  void set_units(::int64_t value);
+
+  private:
+  ::int64_t _internal_units() const;
+  void _internal_set_units(::int64_t value);
+
+  public:
+  // int32 nanos = 3;
+  void clear_nanos() ;
+  ::int32_t nanos() const;
+  void set_nanos(::int32_t value);
+
+  private:
+  ::int32_t _internal_nanos() const;
+  void _internal_set_nanos(::int32_t value);
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.Money)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<2, 3, 0, 36, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr currency_code_;
+    ::int64_t units_;
+    ::int32_t nanos_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class GetSupportedCurrenciesResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.GetSupportedCurrenciesResponse) */ {
+ public:
+  inline GetSupportedCurrenciesResponse() : GetSupportedCurrenciesResponse(nullptr) {}
+  ~GetSupportedCurrenciesResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR GetSupportedCurrenciesResponse(::google::protobuf::internal::ConstantInitialized);
+
+  GetSupportedCurrenciesResponse(const GetSupportedCurrenciesResponse& from);
+  GetSupportedCurrenciesResponse(GetSupportedCurrenciesResponse&& from) noexcept
+    : GetSupportedCurrenciesResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline GetSupportedCurrenciesResponse& operator=(const GetSupportedCurrenciesResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline GetSupportedCurrenciesResponse& operator=(GetSupportedCurrenciesResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const GetSupportedCurrenciesResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const GetSupportedCurrenciesResponse* internal_default_instance() {
+    return reinterpret_cast<const GetSupportedCurrenciesResponse*>(
+               &_GetSupportedCurrenciesResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    19;
+
+  friend void swap(GetSupportedCurrenciesResponse& a, GetSupportedCurrenciesResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(GetSupportedCurrenciesResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(GetSupportedCurrenciesResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  GetSupportedCurrenciesResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<GetSupportedCurrenciesResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const GetSupportedCurrenciesResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const GetSupportedCurrenciesResponse& from) {
+    GetSupportedCurrenciesResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(GetSupportedCurrenciesResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.GetSupportedCurrenciesResponse";
+  }
+  protected:
+  explicit GetSupportedCurrenciesResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kCurrencyCodesFieldNumber = 1,
+  };
+  // repeated string currency_codes = 1;
+  int currency_codes_size() const;
+  private:
+  int _internal_currency_codes_size() const;
+
+  public:
+  void clear_currency_codes() ;
+  const std::string& currency_codes(int index) const;
+  std::string* mutable_currency_codes(int index);
+  void set_currency_codes(int index, const std::string& value);
+  void set_currency_codes(int index, std::string&& value);
+  void set_currency_codes(int index, const char* value);
+  void set_currency_codes(int index, const char* value, std::size_t size);
+  void set_currency_codes(int index, absl::string_view value);
+  std::string* add_currency_codes();
+  void add_currency_codes(const std::string& value);
+  void add_currency_codes(std::string&& value);
+  void add_currency_codes(const char* value);
+  void add_currency_codes(const char* value, std::size_t size);
+  void add_currency_codes(absl::string_view value);
+  const ::google::protobuf::RepeatedPtrField<std::string>& currency_codes() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* mutable_currency_codes();
+
+  private:
+  const ::google::protobuf::RepeatedPtrField<std::string>& _internal_currency_codes() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* _internal_mutable_currency_codes();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.GetSupportedCurrenciesResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 62, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::RepeatedPtrField<std::string> currency_codes_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class CurrencyConversionRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.CurrencyConversionRequest) */ {
+ public:
+  inline CurrencyConversionRequest() : CurrencyConversionRequest(nullptr) {}
+  ~CurrencyConversionRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR CurrencyConversionRequest(::google::protobuf::internal::ConstantInitialized);
+
+  CurrencyConversionRequest(const CurrencyConversionRequest& from);
+  CurrencyConversionRequest(CurrencyConversionRequest&& from) noexcept
+    : CurrencyConversionRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline CurrencyConversionRequest& operator=(const CurrencyConversionRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline CurrencyConversionRequest& operator=(CurrencyConversionRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const CurrencyConversionRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const CurrencyConversionRequest* internal_default_instance() {
+    return reinterpret_cast<const CurrencyConversionRequest*>(
+               &_CurrencyConversionRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    20;
+
+  friend void swap(CurrencyConversionRequest& a, CurrencyConversionRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(CurrencyConversionRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(CurrencyConversionRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  CurrencyConversionRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<CurrencyConversionRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const CurrencyConversionRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const CurrencyConversionRequest& from) {
+    CurrencyConversionRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(CurrencyConversionRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.CurrencyConversionRequest";
+  }
+  protected:
+  explicit CurrencyConversionRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kToCodeFieldNumber = 2,
+    kFromFieldNumber = 1,
+  };
+  // string to_code = 2;
+  void clear_to_code() ;
+  const std::string& to_code() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_to_code(Arg_&& arg, Args_... args);
+  std::string* mutable_to_code();
+  PROTOBUF_NODISCARD std::string* release_to_code();
+  void set_allocated_to_code(std::string* ptr);
+
+  private:
+  const std::string& _internal_to_code() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_to_code(
+      const std::string& value);
+  std::string* _internal_mutable_to_code();
+
+  public:
+  // .oteldemo.Money from = 1;
+  bool has_from() const;
+  void clear_from() ;
+  const ::oteldemo::Money& from() const;
+  PROTOBUF_NODISCARD ::oteldemo::Money* release_from();
+  ::oteldemo::Money* mutable_from();
+  void set_allocated_from(::oteldemo::Money* value);
+  void unsafe_arena_set_allocated_from(::oteldemo::Money* value);
+  ::oteldemo::Money* unsafe_arena_release_from();
+
+  private:
+  const ::oteldemo::Money& _internal_from() const;
+  ::oteldemo::Money* _internal_mutable_from();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.CurrencyConversionRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 1, 50, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::internal::ArenaStringPtr to_code_;
+    ::oteldemo::Money* from_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class CreditCardInfo final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.CreditCardInfo) */ {
+ public:
+  inline CreditCardInfo() : CreditCardInfo(nullptr) {}
+  ~CreditCardInfo() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR CreditCardInfo(::google::protobuf::internal::ConstantInitialized);
+
+  CreditCardInfo(const CreditCardInfo& from);
+  CreditCardInfo(CreditCardInfo&& from) noexcept
+    : CreditCardInfo() {
+    *this = ::std::move(from);
+  }
+
+  inline CreditCardInfo& operator=(const CreditCardInfo& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline CreditCardInfo& operator=(CreditCardInfo&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const CreditCardInfo& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const CreditCardInfo* internal_default_instance() {
+    return reinterpret_cast<const CreditCardInfo*>(
+               &_CreditCardInfo_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    21;
+
+  friend void swap(CreditCardInfo& a, CreditCardInfo& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(CreditCardInfo* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(CreditCardInfo* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  CreditCardInfo* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<CreditCardInfo>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const CreditCardInfo& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const CreditCardInfo& from) {
+    CreditCardInfo::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(CreditCardInfo* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.CreditCardInfo";
+  }
+  protected:
+  explicit CreditCardInfo(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kCreditCardNumberFieldNumber = 1,
+    kCreditCardCvvFieldNumber = 2,
+    kCreditCardExpirationYearFieldNumber = 3,
+    kCreditCardExpirationMonthFieldNumber = 4,
+  };
+  // string credit_card_number = 1;
+  void clear_credit_card_number() ;
+  const std::string& credit_card_number() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_credit_card_number(Arg_&& arg, Args_... args);
+  std::string* mutable_credit_card_number();
+  PROTOBUF_NODISCARD std::string* release_credit_card_number();
+  void set_allocated_credit_card_number(std::string* ptr);
+
+  private:
+  const std::string& _internal_credit_card_number() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_credit_card_number(
+      const std::string& value);
+  std::string* _internal_mutable_credit_card_number();
+
+  public:
+  // int32 credit_card_cvv = 2;
+  void clear_credit_card_cvv() ;
+  ::int32_t credit_card_cvv() const;
+  void set_credit_card_cvv(::int32_t value);
+
+  private:
+  ::int32_t _internal_credit_card_cvv() const;
+  void _internal_set_credit_card_cvv(::int32_t value);
+
+  public:
+  // int32 credit_card_expiration_year = 3;
+  void clear_credit_card_expiration_year() ;
+  ::int32_t credit_card_expiration_year() const;
+  void set_credit_card_expiration_year(::int32_t value);
+
+  private:
+  ::int32_t _internal_credit_card_expiration_year() const;
+  void _internal_set_credit_card_expiration_year(::int32_t value);
+
+  public:
+  // int32 credit_card_expiration_month = 4;
+  void clear_credit_card_expiration_month() ;
+  ::int32_t credit_card_expiration_month() const;
+  void set_credit_card_expiration_month(::int32_t value);
+
+  private:
+  ::int32_t _internal_credit_card_expiration_month() const;
+  void _internal_set_credit_card_expiration_month(::int32_t value);
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.CreditCardInfo)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<2, 4, 0, 50, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr credit_card_number_;
+    ::int32_t credit_card_cvv_;
+    ::int32_t credit_card_expiration_year_;
+    ::int32_t credit_card_expiration_month_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class ChargeRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.ChargeRequest) */ {
+ public:
+  inline ChargeRequest() : ChargeRequest(nullptr) {}
+  ~ChargeRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ChargeRequest(::google::protobuf::internal::ConstantInitialized);
+
+  ChargeRequest(const ChargeRequest& from);
+  ChargeRequest(ChargeRequest&& from) noexcept
+    : ChargeRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline ChargeRequest& operator=(const ChargeRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ChargeRequest& operator=(ChargeRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ChargeRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ChargeRequest* internal_default_instance() {
+    return reinterpret_cast<const ChargeRequest*>(
+               &_ChargeRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    22;
+
+  friend void swap(ChargeRequest& a, ChargeRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ChargeRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ChargeRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ChargeRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ChargeRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ChargeRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ChargeRequest& from) {
+    ChargeRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ChargeRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.ChargeRequest";
+  }
+  protected:
+  explicit ChargeRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kAmountFieldNumber = 1,
+    kCreditCardFieldNumber = 2,
+  };
+  // .oteldemo.Money amount = 1;
+  bool has_amount() const;
+  void clear_amount() ;
+  const ::oteldemo::Money& amount() const;
+  PROTOBUF_NODISCARD ::oteldemo::Money* release_amount();
+  ::oteldemo::Money* mutable_amount();
+  void set_allocated_amount(::oteldemo::Money* value);
+  void unsafe_arena_set_allocated_amount(::oteldemo::Money* value);
+  ::oteldemo::Money* unsafe_arena_release_amount();
+
+  private:
+  const ::oteldemo::Money& _internal_amount() const;
+  ::oteldemo::Money* _internal_mutable_amount();
+
+  public:
+  // .oteldemo.CreditCardInfo credit_card = 2;
+  bool has_credit_card() const;
+  void clear_credit_card() ;
+  const ::oteldemo::CreditCardInfo& credit_card() const;
+  PROTOBUF_NODISCARD ::oteldemo::CreditCardInfo* release_credit_card();
+  ::oteldemo::CreditCardInfo* mutable_credit_card();
+  void set_allocated_credit_card(::oteldemo::CreditCardInfo* value);
+  void unsafe_arena_set_allocated_credit_card(::oteldemo::CreditCardInfo* value);
+  ::oteldemo::CreditCardInfo* unsafe_arena_release_credit_card();
+
+  private:
+  const ::oteldemo::CreditCardInfo& _internal_credit_card() const;
+  ::oteldemo::CreditCardInfo* _internal_mutable_credit_card();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.ChargeRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 2, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::oteldemo::Money* amount_;
+    ::oteldemo::CreditCardInfo* credit_card_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class ChargeResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.ChargeResponse) */ {
+ public:
+  inline ChargeResponse() : ChargeResponse(nullptr) {}
+  ~ChargeResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ChargeResponse(::google::protobuf::internal::ConstantInitialized);
+
+  ChargeResponse(const ChargeResponse& from);
+  ChargeResponse(ChargeResponse&& from) noexcept
+    : ChargeResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline ChargeResponse& operator=(const ChargeResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ChargeResponse& operator=(ChargeResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ChargeResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ChargeResponse* internal_default_instance() {
+    return reinterpret_cast<const ChargeResponse*>(
+               &_ChargeResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    23;
+
+  friend void swap(ChargeResponse& a, ChargeResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ChargeResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ChargeResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ChargeResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ChargeResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ChargeResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ChargeResponse& from) {
+    ChargeResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ChargeResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.ChargeResponse";
+  }
+  protected:
+  explicit ChargeResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kTransactionIdFieldNumber = 1,
+  };
+  // string transaction_id = 1;
+  void clear_transaction_id() ;
+  const std::string& transaction_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_transaction_id(Arg_&& arg, Args_... args);
+  std::string* mutable_transaction_id();
+  PROTOBUF_NODISCARD std::string* release_transaction_id();
+  void set_allocated_transaction_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_transaction_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_transaction_id(
+      const std::string& value);
+  std::string* _internal_mutable_transaction_id();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.ChargeResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 46, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr transaction_id_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class OrderItem final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.OrderItem) */ {
+ public:
+  inline OrderItem() : OrderItem(nullptr) {}
+  ~OrderItem() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR OrderItem(::google::protobuf::internal::ConstantInitialized);
+
+  OrderItem(const OrderItem& from);
+  OrderItem(OrderItem&& from) noexcept
+    : OrderItem() {
+    *this = ::std::move(from);
+  }
+
+  inline OrderItem& operator=(const OrderItem& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline OrderItem& operator=(OrderItem&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const OrderItem& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const OrderItem* internal_default_instance() {
+    return reinterpret_cast<const OrderItem*>(
+               &_OrderItem_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    24;
+
+  friend void swap(OrderItem& a, OrderItem& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(OrderItem* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(OrderItem* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  OrderItem* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<OrderItem>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const OrderItem& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const OrderItem& from) {
+    OrderItem::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(OrderItem* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.OrderItem";
+  }
+  protected:
+  explicit OrderItem(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kItemFieldNumber = 1,
+    kCostFieldNumber = 2,
+  };
+  // .oteldemo.CartItem item = 1;
+  bool has_item() const;
+  void clear_item() ;
+  const ::oteldemo::CartItem& item() const;
+  PROTOBUF_NODISCARD ::oteldemo::CartItem* release_item();
+  ::oteldemo::CartItem* mutable_item();
+  void set_allocated_item(::oteldemo::CartItem* value);
+  void unsafe_arena_set_allocated_item(::oteldemo::CartItem* value);
+  ::oteldemo::CartItem* unsafe_arena_release_item();
+
+  private:
+  const ::oteldemo::CartItem& _internal_item() const;
+  ::oteldemo::CartItem* _internal_mutable_item();
+
+  public:
+  // .oteldemo.Money cost = 2;
+  bool has_cost() const;
+  void clear_cost() ;
+  const ::oteldemo::Money& cost() const;
+  PROTOBUF_NODISCARD ::oteldemo::Money* release_cost();
+  ::oteldemo::Money* mutable_cost();
+  void set_allocated_cost(::oteldemo::Money* value);
+  void unsafe_arena_set_allocated_cost(::oteldemo::Money* value);
+  ::oteldemo::Money* unsafe_arena_release_cost();
+
+  private:
+  const ::oteldemo::Money& _internal_cost() const;
+  ::oteldemo::Money* _internal_mutable_cost();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.OrderItem)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 2, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::oteldemo::CartItem* item_;
+    ::oteldemo::Money* cost_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class OrderResult final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.OrderResult) */ {
+ public:
+  inline OrderResult() : OrderResult(nullptr) {}
+  ~OrderResult() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR OrderResult(::google::protobuf::internal::ConstantInitialized);
+
+  OrderResult(const OrderResult& from);
+  OrderResult(OrderResult&& from) noexcept
+    : OrderResult() {
+    *this = ::std::move(from);
+  }
+
+  inline OrderResult& operator=(const OrderResult& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline OrderResult& operator=(OrderResult&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const OrderResult& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const OrderResult* internal_default_instance() {
+    return reinterpret_cast<const OrderResult*>(
+               &_OrderResult_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    25;
+
+  friend void swap(OrderResult& a, OrderResult& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(OrderResult* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(OrderResult* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  OrderResult* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<OrderResult>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const OrderResult& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const OrderResult& from) {
+    OrderResult::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(OrderResult* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.OrderResult";
+  }
+  protected:
+  explicit OrderResult(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kItemsFieldNumber = 5,
+    kOrderIdFieldNumber = 1,
+    kShippingTrackingIdFieldNumber = 2,
+    kShippingCostFieldNumber = 3,
+    kShippingAddressFieldNumber = 4,
+  };
+  // repeated .oteldemo.OrderItem items = 5;
+  int items_size() const;
+  private:
+  int _internal_items_size() const;
+
+  public:
+  void clear_items() ;
+  ::oteldemo::OrderItem* mutable_items(int index);
+  ::google::protobuf::RepeatedPtrField< ::oteldemo::OrderItem >*
+      mutable_items();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::oteldemo::OrderItem>& _internal_items() const;
+  ::google::protobuf::RepeatedPtrField<::oteldemo::OrderItem>* _internal_mutable_items();
+  public:
+  const ::oteldemo::OrderItem& items(int index) const;
+  ::oteldemo::OrderItem* add_items();
+  const ::google::protobuf::RepeatedPtrField< ::oteldemo::OrderItem >&
+      items() const;
+  // string order_id = 1;
+  void clear_order_id() ;
+  const std::string& order_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_order_id(Arg_&& arg, Args_... args);
+  std::string* mutable_order_id();
+  PROTOBUF_NODISCARD std::string* release_order_id();
+  void set_allocated_order_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_order_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_order_id(
+      const std::string& value);
+  std::string* _internal_mutable_order_id();
+
+  public:
+  // string shipping_tracking_id = 2;
+  void clear_shipping_tracking_id() ;
+  const std::string& shipping_tracking_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_shipping_tracking_id(Arg_&& arg, Args_... args);
+  std::string* mutable_shipping_tracking_id();
+  PROTOBUF_NODISCARD std::string* release_shipping_tracking_id();
+  void set_allocated_shipping_tracking_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_shipping_tracking_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_shipping_tracking_id(
+      const std::string& value);
+  std::string* _internal_mutable_shipping_tracking_id();
+
+  public:
+  // .oteldemo.Money shipping_cost = 3;
+  bool has_shipping_cost() const;
+  void clear_shipping_cost() ;
+  const ::oteldemo::Money& shipping_cost() const;
+  PROTOBUF_NODISCARD ::oteldemo::Money* release_shipping_cost();
+  ::oteldemo::Money* mutable_shipping_cost();
+  void set_allocated_shipping_cost(::oteldemo::Money* value);
+  void unsafe_arena_set_allocated_shipping_cost(::oteldemo::Money* value);
+  ::oteldemo::Money* unsafe_arena_release_shipping_cost();
+
+  private:
+  const ::oteldemo::Money& _internal_shipping_cost() const;
+  ::oteldemo::Money* _internal_mutable_shipping_cost();
+
+  public:
+  // .oteldemo.Address shipping_address = 4;
+  bool has_shipping_address() const;
+  void clear_shipping_address() ;
+  const ::oteldemo::Address& shipping_address() const;
+  PROTOBUF_NODISCARD ::oteldemo::Address* release_shipping_address();
+  ::oteldemo::Address* mutable_shipping_address();
+  void set_allocated_shipping_address(::oteldemo::Address* value);
+  void unsafe_arena_set_allocated_shipping_address(::oteldemo::Address* value);
+  ::oteldemo::Address* unsafe_arena_release_shipping_address();
+
+  private:
+  const ::oteldemo::Address& _internal_shipping_address() const;
+  ::oteldemo::Address* _internal_mutable_shipping_address();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.OrderResult)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<3, 5, 3, 57, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::RepeatedPtrField< ::oteldemo::OrderItem > items_;
+    ::google::protobuf::internal::ArenaStringPtr order_id_;
+    ::google::protobuf::internal::ArenaStringPtr shipping_tracking_id_;
+    ::oteldemo::Money* shipping_cost_;
+    ::oteldemo::Address* shipping_address_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class SendOrderConfirmationRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.SendOrderConfirmationRequest) */ {
+ public:
+  inline SendOrderConfirmationRequest() : SendOrderConfirmationRequest(nullptr) {}
+  ~SendOrderConfirmationRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR SendOrderConfirmationRequest(::google::protobuf::internal::ConstantInitialized);
+
+  SendOrderConfirmationRequest(const SendOrderConfirmationRequest& from);
+  SendOrderConfirmationRequest(SendOrderConfirmationRequest&& from) noexcept
+    : SendOrderConfirmationRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline SendOrderConfirmationRequest& operator=(const SendOrderConfirmationRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline SendOrderConfirmationRequest& operator=(SendOrderConfirmationRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const SendOrderConfirmationRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const SendOrderConfirmationRequest* internal_default_instance() {
+    return reinterpret_cast<const SendOrderConfirmationRequest*>(
+               &_SendOrderConfirmationRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    26;
+
+  friend void swap(SendOrderConfirmationRequest& a, SendOrderConfirmationRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(SendOrderConfirmationRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(SendOrderConfirmationRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  SendOrderConfirmationRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<SendOrderConfirmationRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const SendOrderConfirmationRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const SendOrderConfirmationRequest& from) {
+    SendOrderConfirmationRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(SendOrderConfirmationRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.SendOrderConfirmationRequest";
+  }
+  protected:
+  explicit SendOrderConfirmationRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kEmailFieldNumber = 1,
+    kOrderFieldNumber = 2,
+  };
+  // string email = 1;
+  void clear_email() ;
+  const std::string& email() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_email(Arg_&& arg, Args_... args);
+  std::string* mutable_email();
+  PROTOBUF_NODISCARD std::string* release_email();
+  void set_allocated_email(std::string* ptr);
+
+  private:
+  const std::string& _internal_email() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_email(
+      const std::string& value);
+  std::string* _internal_mutable_email();
+
+  public:
+  // .oteldemo.OrderResult order = 2;
+  bool has_order() const;
+  void clear_order() ;
+  const ::oteldemo::OrderResult& order() const;
+  PROTOBUF_NODISCARD ::oteldemo::OrderResult* release_order();
+  ::oteldemo::OrderResult* mutable_order();
+  void set_allocated_order(::oteldemo::OrderResult* value);
+  void unsafe_arena_set_allocated_order(::oteldemo::OrderResult* value);
+  ::oteldemo::OrderResult* unsafe_arena_release_order();
+
+  private:
+  const ::oteldemo::OrderResult& _internal_order() const;
+  ::oteldemo::OrderResult* _internal_mutable_order();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.SendOrderConfirmationRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 1, 51, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::internal::ArenaStringPtr email_;
+    ::oteldemo::OrderResult* order_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class PlaceOrderRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.PlaceOrderRequest) */ {
+ public:
+  inline PlaceOrderRequest() : PlaceOrderRequest(nullptr) {}
+  ~PlaceOrderRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR PlaceOrderRequest(::google::protobuf::internal::ConstantInitialized);
+
+  PlaceOrderRequest(const PlaceOrderRequest& from);
+  PlaceOrderRequest(PlaceOrderRequest&& from) noexcept
+    : PlaceOrderRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline PlaceOrderRequest& operator=(const PlaceOrderRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline PlaceOrderRequest& operator=(PlaceOrderRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const PlaceOrderRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const PlaceOrderRequest* internal_default_instance() {
+    return reinterpret_cast<const PlaceOrderRequest*>(
+               &_PlaceOrderRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    27;
+
+  friend void swap(PlaceOrderRequest& a, PlaceOrderRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(PlaceOrderRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(PlaceOrderRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  PlaceOrderRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<PlaceOrderRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const PlaceOrderRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const PlaceOrderRequest& from) {
+    PlaceOrderRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(PlaceOrderRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.PlaceOrderRequest";
+  }
+  protected:
+  explicit PlaceOrderRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kUserIdFieldNumber = 1,
+    kUserCurrencyFieldNumber = 2,
+    kEmailFieldNumber = 5,
+    kAddressFieldNumber = 3,
+    kCreditCardFieldNumber = 6,
+  };
+  // string user_id = 1;
+  void clear_user_id() ;
+  const std::string& user_id() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_user_id(Arg_&& arg, Args_... args);
+  std::string* mutable_user_id();
+  PROTOBUF_NODISCARD std::string* release_user_id();
+  void set_allocated_user_id(std::string* ptr);
+
+  private:
+  const std::string& _internal_user_id() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_user_id(
+      const std::string& value);
+  std::string* _internal_mutable_user_id();
+
+  public:
+  // string user_currency = 2;
+  void clear_user_currency() ;
+  const std::string& user_currency() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_user_currency(Arg_&& arg, Args_... args);
+  std::string* mutable_user_currency();
+  PROTOBUF_NODISCARD std::string* release_user_currency();
+  void set_allocated_user_currency(std::string* ptr);
+
+  private:
+  const std::string& _internal_user_currency() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_user_currency(
+      const std::string& value);
+  std::string* _internal_mutable_user_currency();
+
+  public:
+  // string email = 5;
+  void clear_email() ;
+  const std::string& email() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_email(Arg_&& arg, Args_... args);
+  std::string* mutable_email();
+  PROTOBUF_NODISCARD std::string* release_email();
+  void set_allocated_email(std::string* ptr);
+
+  private:
+  const std::string& _internal_email() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_email(
+      const std::string& value);
+  std::string* _internal_mutable_email();
+
+  public:
+  // .oteldemo.Address address = 3;
+  bool has_address() const;
+  void clear_address() ;
+  const ::oteldemo::Address& address() const;
+  PROTOBUF_NODISCARD ::oteldemo::Address* release_address();
+  ::oteldemo::Address* mutable_address();
+  void set_allocated_address(::oteldemo::Address* value);
+  void unsafe_arena_set_allocated_address(::oteldemo::Address* value);
+  ::oteldemo::Address* unsafe_arena_release_address();
+
+  private:
+  const ::oteldemo::Address& _internal_address() const;
+  ::oteldemo::Address* _internal_mutable_address();
+
+  public:
+  // .oteldemo.CreditCardInfo credit_card = 6;
+  bool has_credit_card() const;
+  void clear_credit_card() ;
+  const ::oteldemo::CreditCardInfo& credit_card() const;
+  PROTOBUF_NODISCARD ::oteldemo::CreditCardInfo* release_credit_card();
+  ::oteldemo::CreditCardInfo* mutable_credit_card();
+  void set_allocated_credit_card(::oteldemo::CreditCardInfo* value);
+  void unsafe_arena_set_allocated_credit_card(::oteldemo::CreditCardInfo* value);
+  ::oteldemo::CreditCardInfo* unsafe_arena_release_credit_card();
+
+  private:
+  const ::oteldemo::CreditCardInfo& _internal_credit_card() const;
+  ::oteldemo::CreditCardInfo* _internal_mutable_credit_card();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.PlaceOrderRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<3, 5, 2, 60, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::google::protobuf::internal::ArenaStringPtr user_id_;
+    ::google::protobuf::internal::ArenaStringPtr user_currency_;
+    ::google::protobuf::internal::ArenaStringPtr email_;
+    ::oteldemo::Address* address_;
+    ::oteldemo::CreditCardInfo* credit_card_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class PlaceOrderResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.PlaceOrderResponse) */ {
+ public:
+  inline PlaceOrderResponse() : PlaceOrderResponse(nullptr) {}
+  ~PlaceOrderResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR PlaceOrderResponse(::google::protobuf::internal::ConstantInitialized);
+
+  PlaceOrderResponse(const PlaceOrderResponse& from);
+  PlaceOrderResponse(PlaceOrderResponse&& from) noexcept
+    : PlaceOrderResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline PlaceOrderResponse& operator=(const PlaceOrderResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline PlaceOrderResponse& operator=(PlaceOrderResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const PlaceOrderResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const PlaceOrderResponse* internal_default_instance() {
+    return reinterpret_cast<const PlaceOrderResponse*>(
+               &_PlaceOrderResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    28;
+
+  friend void swap(PlaceOrderResponse& a, PlaceOrderResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(PlaceOrderResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(PlaceOrderResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  PlaceOrderResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<PlaceOrderResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const PlaceOrderResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const PlaceOrderResponse& from) {
+    PlaceOrderResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(PlaceOrderResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.PlaceOrderResponse";
+  }
+  protected:
+  explicit PlaceOrderResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kOrderFieldNumber = 1,
+  };
+  // .oteldemo.OrderResult order = 1;
+  bool has_order() const;
+  void clear_order() ;
+  const ::oteldemo::OrderResult& order() const;
+  PROTOBUF_NODISCARD ::oteldemo::OrderResult* release_order();
+  ::oteldemo::OrderResult* mutable_order();
+  void set_allocated_order(::oteldemo::OrderResult* value);
+  void unsafe_arena_set_allocated_order(::oteldemo::OrderResult* value);
+  ::oteldemo::OrderResult* unsafe_arena_release_order();
+
+  private:
+  const ::oteldemo::OrderResult& _internal_order() const;
+  ::oteldemo::OrderResult* _internal_mutable_order();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.PlaceOrderResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 1, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::oteldemo::OrderResult* order_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class AdRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.AdRequest) */ {
+ public:
+  inline AdRequest() : AdRequest(nullptr) {}
+  ~AdRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR AdRequest(::google::protobuf::internal::ConstantInitialized);
+
+  AdRequest(const AdRequest& from);
+  AdRequest(AdRequest&& from) noexcept
+    : AdRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline AdRequest& operator=(const AdRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline AdRequest& operator=(AdRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const AdRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const AdRequest* internal_default_instance() {
+    return reinterpret_cast<const AdRequest*>(
+               &_AdRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    29;
+
+  friend void swap(AdRequest& a, AdRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(AdRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(AdRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  AdRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<AdRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const AdRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const AdRequest& from) {
+    AdRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(AdRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.AdRequest";
+  }
+  protected:
+  explicit AdRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kContextKeysFieldNumber = 1,
+  };
+  // repeated string context_keys = 1;
+  int context_keys_size() const;
+  private:
+  int _internal_context_keys_size() const;
+
+  public:
+  void clear_context_keys() ;
+  const std::string& context_keys(int index) const;
+  std::string* mutable_context_keys(int index);
+  void set_context_keys(int index, const std::string& value);
+  void set_context_keys(int index, std::string&& value);
+  void set_context_keys(int index, const char* value);
+  void set_context_keys(int index, const char* value, std::size_t size);
+  void set_context_keys(int index, absl::string_view value);
+  std::string* add_context_keys();
+  void add_context_keys(const std::string& value);
+  void add_context_keys(std::string&& value);
+  void add_context_keys(const char* value);
+  void add_context_keys(const char* value, std::size_t size);
+  void add_context_keys(absl::string_view value);
+  const ::google::protobuf::RepeatedPtrField<std::string>& context_keys() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* mutable_context_keys();
+
+  private:
+  const ::google::protobuf::RepeatedPtrField<std::string>& _internal_context_keys() const;
+  ::google::protobuf::RepeatedPtrField<std::string>* _internal_mutable_context_keys();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.AdRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 39, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::RepeatedPtrField<std::string> context_keys_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class AdResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.AdResponse) */ {
+ public:
+  inline AdResponse() : AdResponse(nullptr) {}
+  ~AdResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR AdResponse(::google::protobuf::internal::ConstantInitialized);
+
+  AdResponse(const AdResponse& from);
+  AdResponse(AdResponse&& from) noexcept
+    : AdResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline AdResponse& operator=(const AdResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline AdResponse& operator=(AdResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const AdResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const AdResponse* internal_default_instance() {
+    return reinterpret_cast<const AdResponse*>(
+               &_AdResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    30;
+
+  friend void swap(AdResponse& a, AdResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(AdResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(AdResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  AdResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<AdResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const AdResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const AdResponse& from) {
+    AdResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(AdResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.AdResponse";
+  }
+  protected:
+  explicit AdResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kAdsFieldNumber = 1,
+  };
+  // repeated .oteldemo.Ad ads = 1;
+  int ads_size() const;
+  private:
+  int _internal_ads_size() const;
+
+  public:
+  void clear_ads() ;
+  ::oteldemo::Ad* mutable_ads(int index);
+  ::google::protobuf::RepeatedPtrField< ::oteldemo::Ad >*
+      mutable_ads();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::oteldemo::Ad>& _internal_ads() const;
+  ::google::protobuf::RepeatedPtrField<::oteldemo::Ad>* _internal_mutable_ads();
+  public:
+  const ::oteldemo::Ad& ads(int index) const;
+  ::oteldemo::Ad* add_ads();
+  const ::google::protobuf::RepeatedPtrField< ::oteldemo::Ad >&
+      ads() const;
+  // @@protoc_insertion_point(class_scope:oteldemo.AdResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 1, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::RepeatedPtrField< ::oteldemo::Ad > ads_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class Ad final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.Ad) */ {
+ public:
+  inline Ad() : Ad(nullptr) {}
+  ~Ad() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Ad(::google::protobuf::internal::ConstantInitialized);
+
+  Ad(const Ad& from);
+  Ad(Ad&& from) noexcept
+    : Ad() {
+    *this = ::std::move(from);
+  }
+
+  inline Ad& operator=(const Ad& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Ad& operator=(Ad&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Ad& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const Ad* internal_default_instance() {
+    return reinterpret_cast<const Ad*>(
+               &_Ad_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    31;
+
+  friend void swap(Ad& a, Ad& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Ad* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Ad* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Ad* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Ad>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const Ad& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const Ad& from) {
+    Ad::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(Ad* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.Ad";
+  }
+  protected:
+  explicit Ad(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kRedirectUrlFieldNumber = 1,
+    kTextFieldNumber = 2,
+  };
+  // string redirect_url = 1;
+  void clear_redirect_url() ;
+  const std::string& redirect_url() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_redirect_url(Arg_&& arg, Args_... args);
+  std::string* mutable_redirect_url();
+  PROTOBUF_NODISCARD std::string* release_redirect_url();
+  void set_allocated_redirect_url(std::string* ptr);
+
+  private:
+  const std::string& _internal_redirect_url() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_redirect_url(
+      const std::string& value);
+  std::string* _internal_mutable_redirect_url();
+
+  public:
+  // string text = 2;
+  void clear_text() ;
+  const std::string& text() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_text(Arg_&& arg, Args_... args);
+  std::string* mutable_text();
+  PROTOBUF_NODISCARD std::string* release_text();
+  void set_allocated_text(std::string* ptr);
+
+  private:
+  const std::string& _internal_text() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_text(
+      const std::string& value);
+  std::string* _internal_mutable_text();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.Ad)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 0, 36, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr redirect_url_;
+    ::google::protobuf::internal::ArenaStringPtr text_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class Flag final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.Flag) */ {
+ public:
+  inline Flag() : Flag(nullptr) {}
+  ~Flag() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR Flag(::google::protobuf::internal::ConstantInitialized);
+
+  Flag(const Flag& from);
+  Flag(Flag&& from) noexcept
+    : Flag() {
+    *this = ::std::move(from);
+  }
+
+  inline Flag& operator=(const Flag& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline Flag& operator=(Flag&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const Flag& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const Flag* internal_default_instance() {
+    return reinterpret_cast<const Flag*>(
+               &_Flag_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    32;
+
+  friend void swap(Flag& a, Flag& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(Flag* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(Flag* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  Flag* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<Flag>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const Flag& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const Flag& from) {
+    Flag::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(Flag* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.Flag";
+  }
+  protected:
+  explicit Flag(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kNameFieldNumber = 1,
+    kDescriptionFieldNumber = 2,
+    kEnabledFieldNumber = 3,
+  };
+  // string name = 1;
+  void clear_name() ;
+  const std::string& name() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_name(Arg_&& arg, Args_... args);
+  std::string* mutable_name();
+  PROTOBUF_NODISCARD std::string* release_name();
+  void set_allocated_name(std::string* ptr);
+
+  private:
+  const std::string& _internal_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_name(
+      const std::string& value);
+  std::string* _internal_mutable_name();
+
+  public:
+  // string description = 2;
+  void clear_description() ;
+  const std::string& description() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_description(Arg_&& arg, Args_... args);
+  std::string* mutable_description();
+  PROTOBUF_NODISCARD std::string* release_description();
+  void set_allocated_description(std::string* ptr);
+
+  private:
+  const std::string& _internal_description() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_description(
+      const std::string& value);
+  std::string* _internal_mutable_description();
+
+  public:
+  // bool enabled = 3;
+  void clear_enabled() ;
+  bool enabled() const;
+  void set_enabled(bool value);
+
+  private:
+  bool _internal_enabled() const;
+  void _internal_set_enabled(bool value);
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.Flag)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<2, 3, 0, 37, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr name_;
+    ::google::protobuf::internal::ArenaStringPtr description_;
+    bool enabled_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class GetFlagRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.GetFlagRequest) */ {
+ public:
+  inline GetFlagRequest() : GetFlagRequest(nullptr) {}
+  ~GetFlagRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR GetFlagRequest(::google::protobuf::internal::ConstantInitialized);
+
+  GetFlagRequest(const GetFlagRequest& from);
+  GetFlagRequest(GetFlagRequest&& from) noexcept
+    : GetFlagRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline GetFlagRequest& operator=(const GetFlagRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline GetFlagRequest& operator=(GetFlagRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const GetFlagRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const GetFlagRequest* internal_default_instance() {
+    return reinterpret_cast<const GetFlagRequest*>(
+               &_GetFlagRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    33;
+
+  friend void swap(GetFlagRequest& a, GetFlagRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(GetFlagRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(GetFlagRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  GetFlagRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<GetFlagRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const GetFlagRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const GetFlagRequest& from) {
+    GetFlagRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(GetFlagRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.GetFlagRequest";
+  }
+  protected:
+  explicit GetFlagRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kNameFieldNumber = 1,
+  };
+  // string name = 1;
+  void clear_name() ;
+  const std::string& name() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_name(Arg_&& arg, Args_... args);
+  std::string* mutable_name();
+  PROTOBUF_NODISCARD std::string* release_name();
+  void set_allocated_name(std::string* ptr);
+
+  private:
+  const std::string& _internal_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_name(
+      const std::string& value);
+  std::string* _internal_mutable_name();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.GetFlagRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 36, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr name_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class GetFlagResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.GetFlagResponse) */ {
+ public:
+  inline GetFlagResponse() : GetFlagResponse(nullptr) {}
+  ~GetFlagResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR GetFlagResponse(::google::protobuf::internal::ConstantInitialized);
+
+  GetFlagResponse(const GetFlagResponse& from);
+  GetFlagResponse(GetFlagResponse&& from) noexcept
+    : GetFlagResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline GetFlagResponse& operator=(const GetFlagResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline GetFlagResponse& operator=(GetFlagResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const GetFlagResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const GetFlagResponse* internal_default_instance() {
+    return reinterpret_cast<const GetFlagResponse*>(
+               &_GetFlagResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    34;
+
+  friend void swap(GetFlagResponse& a, GetFlagResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(GetFlagResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(GetFlagResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  GetFlagResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<GetFlagResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const GetFlagResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const GetFlagResponse& from) {
+    GetFlagResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(GetFlagResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.GetFlagResponse";
+  }
+  protected:
+  explicit GetFlagResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kFlagFieldNumber = 1,
+  };
+  // .oteldemo.Flag flag = 1;
+  bool has_flag() const;
+  void clear_flag() ;
+  const ::oteldemo::Flag& flag() const;
+  PROTOBUF_NODISCARD ::oteldemo::Flag* release_flag();
+  ::oteldemo::Flag* mutable_flag();
+  void set_allocated_flag(::oteldemo::Flag* value);
+  void unsafe_arena_set_allocated_flag(::oteldemo::Flag* value);
+  ::oteldemo::Flag* unsafe_arena_release_flag();
+
+  private:
+  const ::oteldemo::Flag& _internal_flag() const;
+  ::oteldemo::Flag* _internal_mutable_flag();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.GetFlagResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 1, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::oteldemo::Flag* flag_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class CreateFlagRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.CreateFlagRequest) */ {
+ public:
+  inline CreateFlagRequest() : CreateFlagRequest(nullptr) {}
+  ~CreateFlagRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR CreateFlagRequest(::google::protobuf::internal::ConstantInitialized);
+
+  CreateFlagRequest(const CreateFlagRequest& from);
+  CreateFlagRequest(CreateFlagRequest&& from) noexcept
+    : CreateFlagRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline CreateFlagRequest& operator=(const CreateFlagRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline CreateFlagRequest& operator=(CreateFlagRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const CreateFlagRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const CreateFlagRequest* internal_default_instance() {
+    return reinterpret_cast<const CreateFlagRequest*>(
+               &_CreateFlagRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    35;
+
+  friend void swap(CreateFlagRequest& a, CreateFlagRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(CreateFlagRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(CreateFlagRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  CreateFlagRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<CreateFlagRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const CreateFlagRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const CreateFlagRequest& from) {
+    CreateFlagRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(CreateFlagRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.CreateFlagRequest";
+  }
+  protected:
+  explicit CreateFlagRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kNameFieldNumber = 1,
+    kDescriptionFieldNumber = 2,
+    kEnabledFieldNumber = 3,
+  };
+  // string name = 1;
+  void clear_name() ;
+  const std::string& name() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_name(Arg_&& arg, Args_... args);
+  std::string* mutable_name();
+  PROTOBUF_NODISCARD std::string* release_name();
+  void set_allocated_name(std::string* ptr);
+
+  private:
+  const std::string& _internal_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_name(
+      const std::string& value);
+  std::string* _internal_mutable_name();
+
+  public:
+  // string description = 2;
+  void clear_description() ;
+  const std::string& description() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_description(Arg_&& arg, Args_... args);
+  std::string* mutable_description();
+  PROTOBUF_NODISCARD std::string* release_description();
+  void set_allocated_description(std::string* ptr);
+
+  private:
+  const std::string& _internal_description() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_description(
+      const std::string& value);
+  std::string* _internal_mutable_description();
+
+  public:
+  // bool enabled = 3;
+  void clear_enabled() ;
+  bool enabled() const;
+  void set_enabled(bool value);
+
+  private:
+  bool _internal_enabled() const;
+  void _internal_set_enabled(bool value);
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.CreateFlagRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<2, 3, 0, 50, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr name_;
+    ::google::protobuf::internal::ArenaStringPtr description_;
+    bool enabled_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class CreateFlagResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.CreateFlagResponse) */ {
+ public:
+  inline CreateFlagResponse() : CreateFlagResponse(nullptr) {}
+  ~CreateFlagResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR CreateFlagResponse(::google::protobuf::internal::ConstantInitialized);
+
+  CreateFlagResponse(const CreateFlagResponse& from);
+  CreateFlagResponse(CreateFlagResponse&& from) noexcept
+    : CreateFlagResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline CreateFlagResponse& operator=(const CreateFlagResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline CreateFlagResponse& operator=(CreateFlagResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const CreateFlagResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const CreateFlagResponse* internal_default_instance() {
+    return reinterpret_cast<const CreateFlagResponse*>(
+               &_CreateFlagResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    36;
+
+  friend void swap(CreateFlagResponse& a, CreateFlagResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(CreateFlagResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(CreateFlagResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  CreateFlagResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<CreateFlagResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const CreateFlagResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const CreateFlagResponse& from) {
+    CreateFlagResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(CreateFlagResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.CreateFlagResponse";
+  }
+  protected:
+  explicit CreateFlagResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kFlagFieldNumber = 1,
+  };
+  // .oteldemo.Flag flag = 1;
+  bool has_flag() const;
+  void clear_flag() ;
+  const ::oteldemo::Flag& flag() const;
+  PROTOBUF_NODISCARD ::oteldemo::Flag* release_flag();
+  ::oteldemo::Flag* mutable_flag();
+  void set_allocated_flag(::oteldemo::Flag* value);
+  void unsafe_arena_set_allocated_flag(::oteldemo::Flag* value);
+  ::oteldemo::Flag* unsafe_arena_release_flag();
+
+  private:
+  const ::oteldemo::Flag& _internal_flag() const;
+  ::oteldemo::Flag* _internal_mutable_flag();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.CreateFlagResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 1, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::HasBits<1> _has_bits_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    ::oteldemo::Flag* flag_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class UpdateFlagRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.UpdateFlagRequest) */ {
+ public:
+  inline UpdateFlagRequest() : UpdateFlagRequest(nullptr) {}
+  ~UpdateFlagRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR UpdateFlagRequest(::google::protobuf::internal::ConstantInitialized);
+
+  UpdateFlagRequest(const UpdateFlagRequest& from);
+  UpdateFlagRequest(UpdateFlagRequest&& from) noexcept
+    : UpdateFlagRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline UpdateFlagRequest& operator=(const UpdateFlagRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline UpdateFlagRequest& operator=(UpdateFlagRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const UpdateFlagRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const UpdateFlagRequest* internal_default_instance() {
+    return reinterpret_cast<const UpdateFlagRequest*>(
+               &_UpdateFlagRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    37;
+
+  friend void swap(UpdateFlagRequest& a, UpdateFlagRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(UpdateFlagRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(UpdateFlagRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  UpdateFlagRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<UpdateFlagRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const UpdateFlagRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const UpdateFlagRequest& from) {
+    UpdateFlagRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(UpdateFlagRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.UpdateFlagRequest";
+  }
+  protected:
+  explicit UpdateFlagRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kNameFieldNumber = 1,
+    kEnabledFieldNumber = 2,
+  };
+  // string name = 1;
+  void clear_name() ;
+  const std::string& name() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_name(Arg_&& arg, Args_... args);
+  std::string* mutable_name();
+  PROTOBUF_NODISCARD std::string* release_name();
+  void set_allocated_name(std::string* ptr);
+
+  private:
+  const std::string& _internal_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_name(
+      const std::string& value);
+  std::string* _internal_mutable_name();
+
+  public:
+  // bool enabled = 2;
+  void clear_enabled() ;
+  bool enabled() const;
+  void set_enabled(bool value);
+
+  private:
+  bool _internal_enabled() const;
+  void _internal_set_enabled(bool value);
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.UpdateFlagRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<1, 2, 0, 39, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr name_;
+    bool enabled_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class UpdateFlagResponse final :
+    public ::google::protobuf::internal::ZeroFieldsBase /* @@protoc_insertion_point(class_definition:oteldemo.UpdateFlagResponse) */ {
+ public:
+  inline UpdateFlagResponse() : UpdateFlagResponse(nullptr) {}
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR UpdateFlagResponse(::google::protobuf::internal::ConstantInitialized);
+
+  UpdateFlagResponse(const UpdateFlagResponse& from);
+  UpdateFlagResponse(UpdateFlagResponse&& from) noexcept
+    : UpdateFlagResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline UpdateFlagResponse& operator=(const UpdateFlagResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline UpdateFlagResponse& operator=(UpdateFlagResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const UpdateFlagResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const UpdateFlagResponse* internal_default_instance() {
+    return reinterpret_cast<const UpdateFlagResponse*>(
+               &_UpdateFlagResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    38;
+
+  friend void swap(UpdateFlagResponse& a, UpdateFlagResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(UpdateFlagResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(UpdateFlagResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  UpdateFlagResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<UpdateFlagResponse>(arena);
+  }
+  using ::google::protobuf::internal::ZeroFieldsBase::CopyFrom;
+  inline void CopyFrom(const UpdateFlagResponse& from) {
+    ::google::protobuf::internal::ZeroFieldsBase::CopyImpl(*this, from);
+  }
+  using ::google::protobuf::internal::ZeroFieldsBase::MergeFrom;
+  void MergeFrom(const UpdateFlagResponse& from) {
+    ::google::protobuf::internal::ZeroFieldsBase::MergeImpl(*this, from);
+  }
+  public:
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.UpdateFlagResponse";
+  }
+  protected:
+  explicit UpdateFlagResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // @@protoc_insertion_point(class_scope:oteldemo.UpdateFlagResponse)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class ListFlagsRequest final :
+    public ::google::protobuf::internal::ZeroFieldsBase /* @@protoc_insertion_point(class_definition:oteldemo.ListFlagsRequest) */ {
+ public:
+  inline ListFlagsRequest() : ListFlagsRequest(nullptr) {}
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ListFlagsRequest(::google::protobuf::internal::ConstantInitialized);
+
+  ListFlagsRequest(const ListFlagsRequest& from);
+  ListFlagsRequest(ListFlagsRequest&& from) noexcept
+    : ListFlagsRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline ListFlagsRequest& operator=(const ListFlagsRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ListFlagsRequest& operator=(ListFlagsRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ListFlagsRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ListFlagsRequest* internal_default_instance() {
+    return reinterpret_cast<const ListFlagsRequest*>(
+               &_ListFlagsRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    39;
+
+  friend void swap(ListFlagsRequest& a, ListFlagsRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ListFlagsRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ListFlagsRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ListFlagsRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ListFlagsRequest>(arena);
+  }
+  using ::google::protobuf::internal::ZeroFieldsBase::CopyFrom;
+  inline void CopyFrom(const ListFlagsRequest& from) {
+    ::google::protobuf::internal::ZeroFieldsBase::CopyImpl(*this, from);
+  }
+  using ::google::protobuf::internal::ZeroFieldsBase::MergeFrom;
+  void MergeFrom(const ListFlagsRequest& from) {
+    ::google::protobuf::internal::ZeroFieldsBase::MergeImpl(*this, from);
+  }
+  public:
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.ListFlagsRequest";
+  }
+  protected:
+  explicit ListFlagsRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // @@protoc_insertion_point(class_scope:oteldemo.ListFlagsRequest)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class ListFlagsResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.ListFlagsResponse) */ {
+ public:
+  inline ListFlagsResponse() : ListFlagsResponse(nullptr) {}
+  ~ListFlagsResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR ListFlagsResponse(::google::protobuf::internal::ConstantInitialized);
+
+  ListFlagsResponse(const ListFlagsResponse& from);
+  ListFlagsResponse(ListFlagsResponse&& from) noexcept
+    : ListFlagsResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline ListFlagsResponse& operator=(const ListFlagsResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ListFlagsResponse& operator=(ListFlagsResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ListFlagsResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ListFlagsResponse* internal_default_instance() {
+    return reinterpret_cast<const ListFlagsResponse*>(
+               &_ListFlagsResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    40;
+
+  friend void swap(ListFlagsResponse& a, ListFlagsResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ListFlagsResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ListFlagsResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ListFlagsResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ListFlagsResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const ListFlagsResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const ListFlagsResponse& from) {
+    ListFlagsResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ListFlagsResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.ListFlagsResponse";
+  }
+  protected:
+  explicit ListFlagsResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kFlagFieldNumber = 1,
+  };
+  // repeated .oteldemo.Flag flag = 1;
+  int flag_size() const;
+  private:
+  int _internal_flag_size() const;
+
+  public:
+  void clear_flag() ;
+  ::oteldemo::Flag* mutable_flag(int index);
+  ::google::protobuf::RepeatedPtrField< ::oteldemo::Flag >*
+      mutable_flag();
+  private:
+  const ::google::protobuf::RepeatedPtrField<::oteldemo::Flag>& _internal_flag() const;
+  ::google::protobuf::RepeatedPtrField<::oteldemo::Flag>* _internal_mutable_flag();
+  public:
+  const ::oteldemo::Flag& flag(int index) const;
+  ::oteldemo::Flag* add_flag();
+  const ::google::protobuf::RepeatedPtrField< ::oteldemo::Flag >&
+      flag() const;
+  // @@protoc_insertion_point(class_scope:oteldemo.ListFlagsResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 1, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::RepeatedPtrField< ::oteldemo::Flag > flag_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class DeleteFlagRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:oteldemo.DeleteFlagRequest) */ {
+ public:
+  inline DeleteFlagRequest() : DeleteFlagRequest(nullptr) {}
+  ~DeleteFlagRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR DeleteFlagRequest(::google::protobuf::internal::ConstantInitialized);
+
+  DeleteFlagRequest(const DeleteFlagRequest& from);
+  DeleteFlagRequest(DeleteFlagRequest&& from) noexcept
+    : DeleteFlagRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline DeleteFlagRequest& operator=(const DeleteFlagRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline DeleteFlagRequest& operator=(DeleteFlagRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const DeleteFlagRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const DeleteFlagRequest* internal_default_instance() {
+    return reinterpret_cast<const DeleteFlagRequest*>(
+               &_DeleteFlagRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    41;
+
+  friend void swap(DeleteFlagRequest& a, DeleteFlagRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(DeleteFlagRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(DeleteFlagRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  DeleteFlagRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<DeleteFlagRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const DeleteFlagRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const DeleteFlagRequest& from) {
+    DeleteFlagRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(DeleteFlagRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.DeleteFlagRequest";
+  }
+  protected:
+  explicit DeleteFlagRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kNameFieldNumber = 1,
+  };
+  // string name = 1;
+  void clear_name() ;
+  const std::string& name() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_name(Arg_&& arg, Args_... args);
+  std::string* mutable_name();
+  PROTOBUF_NODISCARD std::string* release_name();
+  void set_allocated_name(std::string* ptr);
+
+  private:
+  const std::string& _internal_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_name(
+      const std::string& value);
+  std::string* _internal_mutable_name();
+
+  public:
+  // @@protoc_insertion_point(class_scope:oteldemo.DeleteFlagRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 39, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr name_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_demo_2eproto;
+};// -------------------------------------------------------------------
+
+class DeleteFlagResponse final :
+    public ::google::protobuf::internal::ZeroFieldsBase /* @@protoc_insertion_point(class_definition:oteldemo.DeleteFlagResponse) */ {
+ public:
+  inline DeleteFlagResponse() : DeleteFlagResponse(nullptr) {}
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR DeleteFlagResponse(::google::protobuf::internal::ConstantInitialized);
+
+  DeleteFlagResponse(const DeleteFlagResponse& from);
+  DeleteFlagResponse(DeleteFlagResponse&& from) noexcept
+    : DeleteFlagResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline DeleteFlagResponse& operator=(const DeleteFlagResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline DeleteFlagResponse& operator=(DeleteFlagResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const DeleteFlagResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const DeleteFlagResponse* internal_default_instance() {
+    return reinterpret_cast<const DeleteFlagResponse*>(
+               &_DeleteFlagResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    42;
+
+  friend void swap(DeleteFlagResponse& a, DeleteFlagResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(DeleteFlagResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(DeleteFlagResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  DeleteFlagResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<DeleteFlagResponse>(arena);
+  }
+  using ::google::protobuf::internal::ZeroFieldsBase::CopyFrom;
+  inline void CopyFrom(const DeleteFlagResponse& from) {
+    ::google::protobuf::internal::ZeroFieldsBase::CopyImpl(*this, from);
+  }
+  using ::google::protobuf::internal::ZeroFieldsBase::MergeFrom;
+  void MergeFrom(const DeleteFlagResponse& from) {
+    ::google::protobuf::internal::ZeroFieldsBase::MergeImpl(*this, from);
+  }
+  public:
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "oteldemo.DeleteFlagResponse";
+  }
+  protected:
+  explicit DeleteFlagResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  // @@protoc_insertion_point(class_scope:oteldemo.DeleteFlagResponse)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  friend struct ::TableStruct_demo_2eproto;
+};
+
+// ===================================================================
+
+
+
+
+// ===================================================================
+
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif  // __GNUC__
+// -------------------------------------------------------------------
+
+// CartItem
+
+// string product_id = 1;
+inline void CartItem::clear_product_id() {
+  _impl_.product_id_.ClearToEmpty();
+}
+inline const std::string& CartItem::product_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CartItem.product_id)
+  return _internal_product_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CartItem::set_product_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.product_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.CartItem.product_id)
+}
+inline std::string* CartItem::mutable_product_id() {
+  std::string* _s = _internal_mutable_product_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.CartItem.product_id)
+  return _s;
+}
+inline const std::string& CartItem::_internal_product_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.product_id_.Get();
+}
+inline void CartItem::_internal_set_product_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.product_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* CartItem::_internal_mutable_product_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.product_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* CartItem::release_product_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.CartItem.product_id)
+  return _impl_.product_id_.Release();
+}
+inline void CartItem::set_allocated_product_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.product_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.product_id_.IsDefault()) {
+          _impl_.product_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.CartItem.product_id)
+}
+
+// int32 quantity = 2;
+inline void CartItem::clear_quantity() {
+  _impl_.quantity_ = 0;
+}
+inline ::int32_t CartItem::quantity() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CartItem.quantity)
+  return _internal_quantity();
+}
+inline void CartItem::set_quantity(::int32_t value) {
+  _internal_set_quantity(value);
+  // @@protoc_insertion_point(field_set:oteldemo.CartItem.quantity)
+}
+inline ::int32_t CartItem::_internal_quantity() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.quantity_;
+}
+inline void CartItem::_internal_set_quantity(::int32_t value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.quantity_ = value;
+}
+
+// -------------------------------------------------------------------
+
+// AddItemRequest
+
+// string user_id = 1;
+inline void AddItemRequest::clear_user_id() {
+  _impl_.user_id_.ClearToEmpty();
+}
+inline const std::string& AddItemRequest::user_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.AddItemRequest.user_id)
+  return _internal_user_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void AddItemRequest::set_user_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.AddItemRequest.user_id)
+}
+inline std::string* AddItemRequest::mutable_user_id() {
+  std::string* _s = _internal_mutable_user_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.AddItemRequest.user_id)
+  return _s;
+}
+inline const std::string& AddItemRequest::_internal_user_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.user_id_.Get();
+}
+inline void AddItemRequest::_internal_set_user_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* AddItemRequest::_internal_mutable_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.user_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* AddItemRequest::release_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.AddItemRequest.user_id)
+  return _impl_.user_id_.Release();
+}
+inline void AddItemRequest::set_allocated_user_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.user_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.user_id_.IsDefault()) {
+          _impl_.user_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.AddItemRequest.user_id)
+}
+
+// .oteldemo.CartItem item = 2;
+inline bool AddItemRequest::has_item() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.item_ != nullptr);
+  return value;
+}
+inline void AddItemRequest::clear_item() {
+  if (_impl_.item_ != nullptr) _impl_.item_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::CartItem& AddItemRequest::_internal_item() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::CartItem* p = _impl_.item_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::CartItem&>(::oteldemo::_CartItem_default_instance_);
+}
+inline const ::oteldemo::CartItem& AddItemRequest::item() const {
+  // @@protoc_insertion_point(field_get:oteldemo.AddItemRequest.item)
+  return _internal_item();
+}
+inline void AddItemRequest::unsafe_arena_set_allocated_item(::oteldemo::CartItem* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.item_);
+  }
+  _impl_.item_ = reinterpret_cast<::oteldemo::CartItem*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.AddItemRequest.item)
+}
+inline ::oteldemo::CartItem* AddItemRequest::release_item() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::CartItem* released = _impl_.item_;
+  _impl_.item_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::CartItem* AddItemRequest::unsafe_arena_release_item() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.AddItemRequest.item)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::CartItem* temp = _impl_.item_;
+  _impl_.item_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::CartItem* AddItemRequest::_internal_mutable_item() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.item_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::CartItem>(GetArenaForAllocation());
+    _impl_.item_ = reinterpret_cast<::oteldemo::CartItem*>(p);
+  }
+  return _impl_.item_;
+}
+inline ::oteldemo::CartItem* AddItemRequest::mutable_item() {
+  ::oteldemo::CartItem* _msg = _internal_mutable_item();
+  // @@protoc_insertion_point(field_mutable:oteldemo.AddItemRequest.item)
+  return _msg;
+}
+inline void AddItemRequest::set_allocated_item(::oteldemo::CartItem* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::CartItem*>(_impl_.item_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::CartItem*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.item_ = reinterpret_cast<::oteldemo::CartItem*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.AddItemRequest.item)
+}
+
+// -------------------------------------------------------------------
+
+// EmptyCartRequest
+
+// string user_id = 1;
+inline void EmptyCartRequest::clear_user_id() {
+  _impl_.user_id_.ClearToEmpty();
+}
+inline const std::string& EmptyCartRequest::user_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.EmptyCartRequest.user_id)
+  return _internal_user_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void EmptyCartRequest::set_user_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.EmptyCartRequest.user_id)
+}
+inline std::string* EmptyCartRequest::mutable_user_id() {
+  std::string* _s = _internal_mutable_user_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.EmptyCartRequest.user_id)
+  return _s;
+}
+inline const std::string& EmptyCartRequest::_internal_user_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.user_id_.Get();
+}
+inline void EmptyCartRequest::_internal_set_user_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* EmptyCartRequest::_internal_mutable_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.user_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* EmptyCartRequest::release_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.EmptyCartRequest.user_id)
+  return _impl_.user_id_.Release();
+}
+inline void EmptyCartRequest::set_allocated_user_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.user_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.user_id_.IsDefault()) {
+          _impl_.user_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.EmptyCartRequest.user_id)
+}
+
+// -------------------------------------------------------------------
+
+// GetCartRequest
+
+// string user_id = 1;
+inline void GetCartRequest::clear_user_id() {
+  _impl_.user_id_.ClearToEmpty();
+}
+inline const std::string& GetCartRequest::user_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.GetCartRequest.user_id)
+  return _internal_user_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void GetCartRequest::set_user_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.GetCartRequest.user_id)
+}
+inline std::string* GetCartRequest::mutable_user_id() {
+  std::string* _s = _internal_mutable_user_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.GetCartRequest.user_id)
+  return _s;
+}
+inline const std::string& GetCartRequest::_internal_user_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.user_id_.Get();
+}
+inline void GetCartRequest::_internal_set_user_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* GetCartRequest::_internal_mutable_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.user_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* GetCartRequest::release_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.GetCartRequest.user_id)
+  return _impl_.user_id_.Release();
+}
+inline void GetCartRequest::set_allocated_user_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.user_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.user_id_.IsDefault()) {
+          _impl_.user_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.GetCartRequest.user_id)
+}
+
+// -------------------------------------------------------------------
+
+// Cart
+
+// string user_id = 1;
+inline void Cart::clear_user_id() {
+  _impl_.user_id_.ClearToEmpty();
+}
+inline const std::string& Cart::user_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Cart.user_id)
+  return _internal_user_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Cart::set_user_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Cart.user_id)
+}
+inline std::string* Cart::mutable_user_id() {
+  std::string* _s = _internal_mutable_user_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Cart.user_id)
+  return _s;
+}
+inline const std::string& Cart::_internal_user_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.user_id_.Get();
+}
+inline void Cart::_internal_set_user_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Cart::_internal_mutable_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.user_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Cart::release_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Cart.user_id)
+  return _impl_.user_id_.Release();
+}
+inline void Cart::set_allocated_user_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.user_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.user_id_.IsDefault()) {
+          _impl_.user_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Cart.user_id)
+}
+
+// repeated .oteldemo.CartItem items = 2;
+inline int Cart::_internal_items_size() const {
+  return _internal_items().size();
+}
+inline int Cart::items_size() const {
+  return _internal_items_size();
+}
+inline void Cart::clear_items() {
+  _internal_mutable_items()->Clear();
+}
+inline ::oteldemo::CartItem* Cart::mutable_items(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.Cart.items)
+  return _internal_mutable_items()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >*
+Cart::mutable_items() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.Cart.items)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_items();
+}
+inline const ::oteldemo::CartItem& Cart::items(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.Cart.items)
+    return _internal_items().Get(index);
+}
+inline ::oteldemo::CartItem* Cart::add_items() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::oteldemo::CartItem* _add = _internal_mutable_items()->Add();
+  // @@protoc_insertion_point(field_add:oteldemo.Cart.items)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >&
+Cart::items() const {
+  // @@protoc_insertion_point(field_list:oteldemo.Cart.items)
+  return _internal_items();
+}
+inline const ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>&
+Cart::_internal_items() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.items_;
+}
+inline ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>*
+Cart::_internal_mutable_items() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.items_;
+}
+
+// -------------------------------------------------------------------
+
+// Empty
+
+// -------------------------------------------------------------------
+
+// ListRecommendationsRequest
+
+// string user_id = 1;
+inline void ListRecommendationsRequest::clear_user_id() {
+  _impl_.user_id_.ClearToEmpty();
+}
+inline const std::string& ListRecommendationsRequest::user_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.ListRecommendationsRequest.user_id)
+  return _internal_user_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void ListRecommendationsRequest::set_user_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.ListRecommendationsRequest.user_id)
+}
+inline std::string* ListRecommendationsRequest::mutable_user_id() {
+  std::string* _s = _internal_mutable_user_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.ListRecommendationsRequest.user_id)
+  return _s;
+}
+inline const std::string& ListRecommendationsRequest::_internal_user_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.user_id_.Get();
+}
+inline void ListRecommendationsRequest::_internal_set_user_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* ListRecommendationsRequest::_internal_mutable_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.user_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* ListRecommendationsRequest::release_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.ListRecommendationsRequest.user_id)
+  return _impl_.user_id_.Release();
+}
+inline void ListRecommendationsRequest::set_allocated_user_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.user_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.user_id_.IsDefault()) {
+          _impl_.user_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.ListRecommendationsRequest.user_id)
+}
+
+// repeated string product_ids = 2;
+inline int ListRecommendationsRequest::_internal_product_ids_size() const {
+  return _internal_product_ids().size();
+}
+inline int ListRecommendationsRequest::product_ids_size() const {
+  return _internal_product_ids_size();
+}
+inline void ListRecommendationsRequest::clear_product_ids() {
+  _internal_mutable_product_ids()->Clear();
+}
+inline std::string* ListRecommendationsRequest::add_product_ids() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  std::string* _s = _internal_mutable_product_ids()->Add();
+  // @@protoc_insertion_point(field_add_mutable:oteldemo.ListRecommendationsRequest.product_ids)
+  return _s;
+}
+inline const std::string& ListRecommendationsRequest::product_ids(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.ListRecommendationsRequest.product_ids)
+  return _internal_product_ids().Get(index);
+}
+inline std::string* ListRecommendationsRequest::mutable_product_ids(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.ListRecommendationsRequest.product_ids)
+  return _internal_mutable_product_ids()->Mutable(index);
+}
+inline void ListRecommendationsRequest::set_product_ids(int index, const std::string& value) {
+  _internal_mutable_product_ids()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline void ListRecommendationsRequest::set_product_ids(int index, std::string&& value) {
+  _internal_mutable_product_ids()->Mutable(index)->assign(std::move(value));
+  // @@protoc_insertion_point(field_set:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline void ListRecommendationsRequest::set_product_ids(int index, const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  _internal_mutable_product_ids()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set_char:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline void ListRecommendationsRequest::set_product_ids(int index, const char* value,
+                              std::size_t size) {
+  _internal_mutable_product_ids()->Mutable(index)->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline void ListRecommendationsRequest::set_product_ids(int index, absl::string_view value) {
+  _internal_mutable_product_ids()->Mutable(index)->assign(value.data(),
+                                                     value.size());
+  // @@protoc_insertion_point(field_set_string_piece:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline void ListRecommendationsRequest::add_product_ids(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline void ListRecommendationsRequest::add_product_ids(std::string&& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add(std::move(value));
+  // @@protoc_insertion_point(field_add:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline void ListRecommendationsRequest::add_product_ids(const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add_char:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline void ListRecommendationsRequest::add_product_ids(const char* value, std::size_t size) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add()->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_add_pointer:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline void ListRecommendationsRequest::add_product_ids(absl::string_view value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add()->assign(value.data(), value.size());
+  // @@protoc_insertion_point(field_add_string_piece:oteldemo.ListRecommendationsRequest.product_ids)
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+ListRecommendationsRequest::product_ids() const {
+  // @@protoc_insertion_point(field_list:oteldemo.ListRecommendationsRequest.product_ids)
+  return _internal_product_ids();
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>* ListRecommendationsRequest::mutable_product_ids() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.ListRecommendationsRequest.product_ids)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_product_ids();
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+ListRecommendationsRequest::_internal_product_ids() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.product_ids_;
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>*
+ListRecommendationsRequest::_internal_mutable_product_ids() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.product_ids_;
+}
+
+// -------------------------------------------------------------------
+
+// ListRecommendationsResponse
+
+// repeated string product_ids = 1;
+inline int ListRecommendationsResponse::_internal_product_ids_size() const {
+  return _internal_product_ids().size();
+}
+inline int ListRecommendationsResponse::product_ids_size() const {
+  return _internal_product_ids_size();
+}
+inline void ListRecommendationsResponse::clear_product_ids() {
+  _internal_mutable_product_ids()->Clear();
+}
+inline std::string* ListRecommendationsResponse::add_product_ids() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  std::string* _s = _internal_mutable_product_ids()->Add();
+  // @@protoc_insertion_point(field_add_mutable:oteldemo.ListRecommendationsResponse.product_ids)
+  return _s;
+}
+inline const std::string& ListRecommendationsResponse::product_ids(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.ListRecommendationsResponse.product_ids)
+  return _internal_product_ids().Get(index);
+}
+inline std::string* ListRecommendationsResponse::mutable_product_ids(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.ListRecommendationsResponse.product_ids)
+  return _internal_mutable_product_ids()->Mutable(index);
+}
+inline void ListRecommendationsResponse::set_product_ids(int index, const std::string& value) {
+  _internal_mutable_product_ids()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline void ListRecommendationsResponse::set_product_ids(int index, std::string&& value) {
+  _internal_mutable_product_ids()->Mutable(index)->assign(std::move(value));
+  // @@protoc_insertion_point(field_set:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline void ListRecommendationsResponse::set_product_ids(int index, const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  _internal_mutable_product_ids()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set_char:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline void ListRecommendationsResponse::set_product_ids(int index, const char* value,
+                              std::size_t size) {
+  _internal_mutable_product_ids()->Mutable(index)->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline void ListRecommendationsResponse::set_product_ids(int index, absl::string_view value) {
+  _internal_mutable_product_ids()->Mutable(index)->assign(value.data(),
+                                                     value.size());
+  // @@protoc_insertion_point(field_set_string_piece:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline void ListRecommendationsResponse::add_product_ids(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline void ListRecommendationsResponse::add_product_ids(std::string&& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add(std::move(value));
+  // @@protoc_insertion_point(field_add:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline void ListRecommendationsResponse::add_product_ids(const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add_char:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline void ListRecommendationsResponse::add_product_ids(const char* value, std::size_t size) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add()->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_add_pointer:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline void ListRecommendationsResponse::add_product_ids(absl::string_view value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_product_ids()->Add()->assign(value.data(), value.size());
+  // @@protoc_insertion_point(field_add_string_piece:oteldemo.ListRecommendationsResponse.product_ids)
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+ListRecommendationsResponse::product_ids() const {
+  // @@protoc_insertion_point(field_list:oteldemo.ListRecommendationsResponse.product_ids)
+  return _internal_product_ids();
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>* ListRecommendationsResponse::mutable_product_ids() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.ListRecommendationsResponse.product_ids)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_product_ids();
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+ListRecommendationsResponse::_internal_product_ids() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.product_ids_;
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>*
+ListRecommendationsResponse::_internal_mutable_product_ids() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.product_ids_;
+}
+
+// -------------------------------------------------------------------
+
+// Product
+
+// string id = 1;
+inline void Product::clear_id() {
+  _impl_.id_.ClearToEmpty();
+}
+inline const std::string& Product::id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Product.id)
+  return _internal_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Product::set_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Product.id)
+}
+inline std::string* Product::mutable_id() {
+  std::string* _s = _internal_mutable_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Product.id)
+  return _s;
+}
+inline const std::string& Product::_internal_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.id_.Get();
+}
+inline void Product::_internal_set_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Product::_internal_mutable_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Product::release_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Product.id)
+  return _impl_.id_.Release();
+}
+inline void Product::set_allocated_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.id_.IsDefault()) {
+          _impl_.id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Product.id)
+}
+
+// string name = 2;
+inline void Product::clear_name() {
+  _impl_.name_.ClearToEmpty();
+}
+inline const std::string& Product::name() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Product.name)
+  return _internal_name();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Product::set_name(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Product.name)
+}
+inline std::string* Product::mutable_name() {
+  std::string* _s = _internal_mutable_name();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Product.name)
+  return _s;
+}
+inline const std::string& Product::_internal_name() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.name_.Get();
+}
+inline void Product::_internal_set_name(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Product::_internal_mutable_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.name_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Product::release_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Product.name)
+  return _impl_.name_.Release();
+}
+inline void Product::set_allocated_name(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.name_.IsDefault()) {
+          _impl_.name_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Product.name)
+}
+
+// string description = 3;
+inline void Product::clear_description() {
+  _impl_.description_.ClearToEmpty();
+}
+inline const std::string& Product::description() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Product.description)
+  return _internal_description();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Product::set_description(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.description_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Product.description)
+}
+inline std::string* Product::mutable_description() {
+  std::string* _s = _internal_mutable_description();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Product.description)
+  return _s;
+}
+inline const std::string& Product::_internal_description() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.description_.Get();
+}
+inline void Product::_internal_set_description(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.description_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Product::_internal_mutable_description() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.description_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Product::release_description() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Product.description)
+  return _impl_.description_.Release();
+}
+inline void Product::set_allocated_description(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.description_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.description_.IsDefault()) {
+          _impl_.description_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Product.description)
+}
+
+// string picture = 4;
+inline void Product::clear_picture() {
+  _impl_.picture_.ClearToEmpty();
+}
+inline const std::string& Product::picture() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Product.picture)
+  return _internal_picture();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Product::set_picture(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.picture_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Product.picture)
+}
+inline std::string* Product::mutable_picture() {
+  std::string* _s = _internal_mutable_picture();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Product.picture)
+  return _s;
+}
+inline const std::string& Product::_internal_picture() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.picture_.Get();
+}
+inline void Product::_internal_set_picture(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.picture_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Product::_internal_mutable_picture() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.picture_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Product::release_picture() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Product.picture)
+  return _impl_.picture_.Release();
+}
+inline void Product::set_allocated_picture(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.picture_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.picture_.IsDefault()) {
+          _impl_.picture_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Product.picture)
+}
+
+// .oteldemo.Money price_usd = 5;
+inline bool Product::has_price_usd() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.price_usd_ != nullptr);
+  return value;
+}
+inline void Product::clear_price_usd() {
+  if (_impl_.price_usd_ != nullptr) _impl_.price_usd_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Money& Product::_internal_price_usd() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Money* p = _impl_.price_usd_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Money&>(::oteldemo::_Money_default_instance_);
+}
+inline const ::oteldemo::Money& Product::price_usd() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Product.price_usd)
+  return _internal_price_usd();
+}
+inline void Product::unsafe_arena_set_allocated_price_usd(::oteldemo::Money* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.price_usd_);
+  }
+  _impl_.price_usd_ = reinterpret_cast<::oteldemo::Money*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.Product.price_usd)
+}
+inline ::oteldemo::Money* Product::release_price_usd() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* released = _impl_.price_usd_;
+  _impl_.price_usd_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Money* Product::unsafe_arena_release_price_usd() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Product.price_usd)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* temp = _impl_.price_usd_;
+  _impl_.price_usd_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Money* Product::_internal_mutable_price_usd() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.price_usd_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Money>(GetArenaForAllocation());
+    _impl_.price_usd_ = reinterpret_cast<::oteldemo::Money*>(p);
+  }
+  return _impl_.price_usd_;
+}
+inline ::oteldemo::Money* Product::mutable_price_usd() {
+  ::oteldemo::Money* _msg = _internal_mutable_price_usd();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Product.price_usd)
+  return _msg;
+}
+inline void Product::set_allocated_price_usd(::oteldemo::Money* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Money*>(_impl_.price_usd_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Money*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.price_usd_ = reinterpret_cast<::oteldemo::Money*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Product.price_usd)
+}
+
+// repeated string categories = 6;
+inline int Product::_internal_categories_size() const {
+  return _internal_categories().size();
+}
+inline int Product::categories_size() const {
+  return _internal_categories_size();
+}
+inline void Product::clear_categories() {
+  _internal_mutable_categories()->Clear();
+}
+inline std::string* Product::add_categories() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  std::string* _s = _internal_mutable_categories()->Add();
+  // @@protoc_insertion_point(field_add_mutable:oteldemo.Product.categories)
+  return _s;
+}
+inline const std::string& Product::categories(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.Product.categories)
+  return _internal_categories().Get(index);
+}
+inline std::string* Product::mutable_categories(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.Product.categories)
+  return _internal_mutable_categories()->Mutable(index);
+}
+inline void Product::set_categories(int index, const std::string& value) {
+  _internal_mutable_categories()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set:oteldemo.Product.categories)
+}
+inline void Product::set_categories(int index, std::string&& value) {
+  _internal_mutable_categories()->Mutable(index)->assign(std::move(value));
+  // @@protoc_insertion_point(field_set:oteldemo.Product.categories)
+}
+inline void Product::set_categories(int index, const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  _internal_mutable_categories()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set_char:oteldemo.Product.categories)
+}
+inline void Product::set_categories(int index, const char* value,
+                              std::size_t size) {
+  _internal_mutable_categories()->Mutable(index)->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:oteldemo.Product.categories)
+}
+inline void Product::set_categories(int index, absl::string_view value) {
+  _internal_mutable_categories()->Mutable(index)->assign(value.data(),
+                                                     value.size());
+  // @@protoc_insertion_point(field_set_string_piece:oteldemo.Product.categories)
+}
+inline void Product::add_categories(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_categories()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add:oteldemo.Product.categories)
+}
+inline void Product::add_categories(std::string&& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_categories()->Add(std::move(value));
+  // @@protoc_insertion_point(field_add:oteldemo.Product.categories)
+}
+inline void Product::add_categories(const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_categories()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add_char:oteldemo.Product.categories)
+}
+inline void Product::add_categories(const char* value, std::size_t size) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_categories()->Add()->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_add_pointer:oteldemo.Product.categories)
+}
+inline void Product::add_categories(absl::string_view value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_categories()->Add()->assign(value.data(), value.size());
+  // @@protoc_insertion_point(field_add_string_piece:oteldemo.Product.categories)
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+Product::categories() const {
+  // @@protoc_insertion_point(field_list:oteldemo.Product.categories)
+  return _internal_categories();
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>* Product::mutable_categories() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.Product.categories)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_categories();
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+Product::_internal_categories() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.categories_;
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>*
+Product::_internal_mutable_categories() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.categories_;
+}
+
+// -------------------------------------------------------------------
+
+// ListProductsResponse
+
+// repeated .oteldemo.Product products = 1;
+inline int ListProductsResponse::_internal_products_size() const {
+  return _internal_products().size();
+}
+inline int ListProductsResponse::products_size() const {
+  return _internal_products_size();
+}
+inline void ListProductsResponse::clear_products() {
+  _internal_mutable_products()->Clear();
+}
+inline ::oteldemo::Product* ListProductsResponse::mutable_products(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.ListProductsResponse.products)
+  return _internal_mutable_products()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField< ::oteldemo::Product >*
+ListProductsResponse::mutable_products() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.ListProductsResponse.products)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_products();
+}
+inline const ::oteldemo::Product& ListProductsResponse::products(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.ListProductsResponse.products)
+    return _internal_products().Get(index);
+}
+inline ::oteldemo::Product* ListProductsResponse::add_products() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::oteldemo::Product* _add = _internal_mutable_products()->Add();
+  // @@protoc_insertion_point(field_add:oteldemo.ListProductsResponse.products)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField< ::oteldemo::Product >&
+ListProductsResponse::products() const {
+  // @@protoc_insertion_point(field_list:oteldemo.ListProductsResponse.products)
+  return _internal_products();
+}
+inline const ::google::protobuf::RepeatedPtrField<::oteldemo::Product>&
+ListProductsResponse::_internal_products() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.products_;
+}
+inline ::google::protobuf::RepeatedPtrField<::oteldemo::Product>*
+ListProductsResponse::_internal_mutable_products() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.products_;
+}
+
+// -------------------------------------------------------------------
+
+// GetProductRequest
+
+// string id = 1;
+inline void GetProductRequest::clear_id() {
+  _impl_.id_.ClearToEmpty();
+}
+inline const std::string& GetProductRequest::id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.GetProductRequest.id)
+  return _internal_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void GetProductRequest::set_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.GetProductRequest.id)
+}
+inline std::string* GetProductRequest::mutable_id() {
+  std::string* _s = _internal_mutable_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.GetProductRequest.id)
+  return _s;
+}
+inline const std::string& GetProductRequest::_internal_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.id_.Get();
+}
+inline void GetProductRequest::_internal_set_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* GetProductRequest::_internal_mutable_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* GetProductRequest::release_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.GetProductRequest.id)
+  return _impl_.id_.Release();
+}
+inline void GetProductRequest::set_allocated_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.id_.IsDefault()) {
+          _impl_.id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.GetProductRequest.id)
+}
+
+// -------------------------------------------------------------------
+
+// SearchProductsRequest
+
+// string query = 1;
+inline void SearchProductsRequest::clear_query() {
+  _impl_.query_.ClearToEmpty();
+}
+inline const std::string& SearchProductsRequest::query() const {
+  // @@protoc_insertion_point(field_get:oteldemo.SearchProductsRequest.query)
+  return _internal_query();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void SearchProductsRequest::set_query(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.query_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.SearchProductsRequest.query)
+}
+inline std::string* SearchProductsRequest::mutable_query() {
+  std::string* _s = _internal_mutable_query();
+  // @@protoc_insertion_point(field_mutable:oteldemo.SearchProductsRequest.query)
+  return _s;
+}
+inline const std::string& SearchProductsRequest::_internal_query() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.query_.Get();
+}
+inline void SearchProductsRequest::_internal_set_query(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.query_.Set(value, GetArenaForAllocation());
+}
+inline std::string* SearchProductsRequest::_internal_mutable_query() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.query_.Mutable( GetArenaForAllocation());
+}
+inline std::string* SearchProductsRequest::release_query() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.SearchProductsRequest.query)
+  return _impl_.query_.Release();
+}
+inline void SearchProductsRequest::set_allocated_query(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.query_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.query_.IsDefault()) {
+          _impl_.query_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.SearchProductsRequest.query)
+}
+
+// -------------------------------------------------------------------
+
+// SearchProductsResponse
+
+// repeated .oteldemo.Product results = 1;
+inline int SearchProductsResponse::_internal_results_size() const {
+  return _internal_results().size();
+}
+inline int SearchProductsResponse::results_size() const {
+  return _internal_results_size();
+}
+inline void SearchProductsResponse::clear_results() {
+  _internal_mutable_results()->Clear();
+}
+inline ::oteldemo::Product* SearchProductsResponse::mutable_results(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.SearchProductsResponse.results)
+  return _internal_mutable_results()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField< ::oteldemo::Product >*
+SearchProductsResponse::mutable_results() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.SearchProductsResponse.results)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_results();
+}
+inline const ::oteldemo::Product& SearchProductsResponse::results(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.SearchProductsResponse.results)
+    return _internal_results().Get(index);
+}
+inline ::oteldemo::Product* SearchProductsResponse::add_results() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::oteldemo::Product* _add = _internal_mutable_results()->Add();
+  // @@protoc_insertion_point(field_add:oteldemo.SearchProductsResponse.results)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField< ::oteldemo::Product >&
+SearchProductsResponse::results() const {
+  // @@protoc_insertion_point(field_list:oteldemo.SearchProductsResponse.results)
+  return _internal_results();
+}
+inline const ::google::protobuf::RepeatedPtrField<::oteldemo::Product>&
+SearchProductsResponse::_internal_results() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.results_;
+}
+inline ::google::protobuf::RepeatedPtrField<::oteldemo::Product>*
+SearchProductsResponse::_internal_mutable_results() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.results_;
+}
+
+// -------------------------------------------------------------------
+
+// GetQuoteRequest
+
+// .oteldemo.Address address = 1;
+inline bool GetQuoteRequest::has_address() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.address_ != nullptr);
+  return value;
+}
+inline void GetQuoteRequest::clear_address() {
+  if (_impl_.address_ != nullptr) _impl_.address_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Address& GetQuoteRequest::_internal_address() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Address* p = _impl_.address_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Address&>(::oteldemo::_Address_default_instance_);
+}
+inline const ::oteldemo::Address& GetQuoteRequest::address() const {
+  // @@protoc_insertion_point(field_get:oteldemo.GetQuoteRequest.address)
+  return _internal_address();
+}
+inline void GetQuoteRequest::unsafe_arena_set_allocated_address(::oteldemo::Address* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.address_);
+  }
+  _impl_.address_ = reinterpret_cast<::oteldemo::Address*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.GetQuoteRequest.address)
+}
+inline ::oteldemo::Address* GetQuoteRequest::release_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Address* released = _impl_.address_;
+  _impl_.address_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Address* GetQuoteRequest::unsafe_arena_release_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.GetQuoteRequest.address)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Address* temp = _impl_.address_;
+  _impl_.address_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Address* GetQuoteRequest::_internal_mutable_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.address_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Address>(GetArenaForAllocation());
+    _impl_.address_ = reinterpret_cast<::oteldemo::Address*>(p);
+  }
+  return _impl_.address_;
+}
+inline ::oteldemo::Address* GetQuoteRequest::mutable_address() {
+  ::oteldemo::Address* _msg = _internal_mutable_address();
+  // @@protoc_insertion_point(field_mutable:oteldemo.GetQuoteRequest.address)
+  return _msg;
+}
+inline void GetQuoteRequest::set_allocated_address(::oteldemo::Address* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Address*>(_impl_.address_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Address*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.address_ = reinterpret_cast<::oteldemo::Address*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.GetQuoteRequest.address)
+}
+
+// repeated .oteldemo.CartItem items = 2;
+inline int GetQuoteRequest::_internal_items_size() const {
+  return _internal_items().size();
+}
+inline int GetQuoteRequest::items_size() const {
+  return _internal_items_size();
+}
+inline void GetQuoteRequest::clear_items() {
+  _internal_mutable_items()->Clear();
+}
+inline ::oteldemo::CartItem* GetQuoteRequest::mutable_items(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.GetQuoteRequest.items)
+  return _internal_mutable_items()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >*
+GetQuoteRequest::mutable_items() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.GetQuoteRequest.items)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_items();
+}
+inline const ::oteldemo::CartItem& GetQuoteRequest::items(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.GetQuoteRequest.items)
+    return _internal_items().Get(index);
+}
+inline ::oteldemo::CartItem* GetQuoteRequest::add_items() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::oteldemo::CartItem* _add = _internal_mutable_items()->Add();
+  // @@protoc_insertion_point(field_add:oteldemo.GetQuoteRequest.items)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >&
+GetQuoteRequest::items() const {
+  // @@protoc_insertion_point(field_list:oteldemo.GetQuoteRequest.items)
+  return _internal_items();
+}
+inline const ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>&
+GetQuoteRequest::_internal_items() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.items_;
+}
+inline ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>*
+GetQuoteRequest::_internal_mutable_items() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.items_;
+}
+
+// -------------------------------------------------------------------
+
+// GetQuoteResponse
+
+// .oteldemo.Money cost_usd = 1;
+inline bool GetQuoteResponse::has_cost_usd() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.cost_usd_ != nullptr);
+  return value;
+}
+inline void GetQuoteResponse::clear_cost_usd() {
+  if (_impl_.cost_usd_ != nullptr) _impl_.cost_usd_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Money& GetQuoteResponse::_internal_cost_usd() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Money* p = _impl_.cost_usd_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Money&>(::oteldemo::_Money_default_instance_);
+}
+inline const ::oteldemo::Money& GetQuoteResponse::cost_usd() const {
+  // @@protoc_insertion_point(field_get:oteldemo.GetQuoteResponse.cost_usd)
+  return _internal_cost_usd();
+}
+inline void GetQuoteResponse::unsafe_arena_set_allocated_cost_usd(::oteldemo::Money* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.cost_usd_);
+  }
+  _impl_.cost_usd_ = reinterpret_cast<::oteldemo::Money*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.GetQuoteResponse.cost_usd)
+}
+inline ::oteldemo::Money* GetQuoteResponse::release_cost_usd() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* released = _impl_.cost_usd_;
+  _impl_.cost_usd_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Money* GetQuoteResponse::unsafe_arena_release_cost_usd() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.GetQuoteResponse.cost_usd)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* temp = _impl_.cost_usd_;
+  _impl_.cost_usd_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Money* GetQuoteResponse::_internal_mutable_cost_usd() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.cost_usd_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Money>(GetArenaForAllocation());
+    _impl_.cost_usd_ = reinterpret_cast<::oteldemo::Money*>(p);
+  }
+  return _impl_.cost_usd_;
+}
+inline ::oteldemo::Money* GetQuoteResponse::mutable_cost_usd() {
+  ::oteldemo::Money* _msg = _internal_mutable_cost_usd();
+  // @@protoc_insertion_point(field_mutable:oteldemo.GetQuoteResponse.cost_usd)
+  return _msg;
+}
+inline void GetQuoteResponse::set_allocated_cost_usd(::oteldemo::Money* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Money*>(_impl_.cost_usd_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Money*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.cost_usd_ = reinterpret_cast<::oteldemo::Money*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.GetQuoteResponse.cost_usd)
+}
+
+// -------------------------------------------------------------------
+
+// ShipOrderRequest
+
+// .oteldemo.Address address = 1;
+inline bool ShipOrderRequest::has_address() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.address_ != nullptr);
+  return value;
+}
+inline void ShipOrderRequest::clear_address() {
+  if (_impl_.address_ != nullptr) _impl_.address_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Address& ShipOrderRequest::_internal_address() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Address* p = _impl_.address_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Address&>(::oteldemo::_Address_default_instance_);
+}
+inline const ::oteldemo::Address& ShipOrderRequest::address() const {
+  // @@protoc_insertion_point(field_get:oteldemo.ShipOrderRequest.address)
+  return _internal_address();
+}
+inline void ShipOrderRequest::unsafe_arena_set_allocated_address(::oteldemo::Address* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.address_);
+  }
+  _impl_.address_ = reinterpret_cast<::oteldemo::Address*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.ShipOrderRequest.address)
+}
+inline ::oteldemo::Address* ShipOrderRequest::release_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Address* released = _impl_.address_;
+  _impl_.address_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Address* ShipOrderRequest::unsafe_arena_release_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.ShipOrderRequest.address)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Address* temp = _impl_.address_;
+  _impl_.address_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Address* ShipOrderRequest::_internal_mutable_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.address_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Address>(GetArenaForAllocation());
+    _impl_.address_ = reinterpret_cast<::oteldemo::Address*>(p);
+  }
+  return _impl_.address_;
+}
+inline ::oteldemo::Address* ShipOrderRequest::mutable_address() {
+  ::oteldemo::Address* _msg = _internal_mutable_address();
+  // @@protoc_insertion_point(field_mutable:oteldemo.ShipOrderRequest.address)
+  return _msg;
+}
+inline void ShipOrderRequest::set_allocated_address(::oteldemo::Address* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Address*>(_impl_.address_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Address*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.address_ = reinterpret_cast<::oteldemo::Address*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.ShipOrderRequest.address)
+}
+
+// repeated .oteldemo.CartItem items = 2;
+inline int ShipOrderRequest::_internal_items_size() const {
+  return _internal_items().size();
+}
+inline int ShipOrderRequest::items_size() const {
+  return _internal_items_size();
+}
+inline void ShipOrderRequest::clear_items() {
+  _internal_mutable_items()->Clear();
+}
+inline ::oteldemo::CartItem* ShipOrderRequest::mutable_items(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.ShipOrderRequest.items)
+  return _internal_mutable_items()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >*
+ShipOrderRequest::mutable_items() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.ShipOrderRequest.items)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_items();
+}
+inline const ::oteldemo::CartItem& ShipOrderRequest::items(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.ShipOrderRequest.items)
+    return _internal_items().Get(index);
+}
+inline ::oteldemo::CartItem* ShipOrderRequest::add_items() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::oteldemo::CartItem* _add = _internal_mutable_items()->Add();
+  // @@protoc_insertion_point(field_add:oteldemo.ShipOrderRequest.items)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField< ::oteldemo::CartItem >&
+ShipOrderRequest::items() const {
+  // @@protoc_insertion_point(field_list:oteldemo.ShipOrderRequest.items)
+  return _internal_items();
+}
+inline const ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>&
+ShipOrderRequest::_internal_items() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.items_;
+}
+inline ::google::protobuf::RepeatedPtrField<::oteldemo::CartItem>*
+ShipOrderRequest::_internal_mutable_items() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.items_;
+}
+
+// -------------------------------------------------------------------
+
+// ShipOrderResponse
+
+// string tracking_id = 1;
+inline void ShipOrderResponse::clear_tracking_id() {
+  _impl_.tracking_id_.ClearToEmpty();
+}
+inline const std::string& ShipOrderResponse::tracking_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.ShipOrderResponse.tracking_id)
+  return _internal_tracking_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void ShipOrderResponse::set_tracking_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.tracking_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.ShipOrderResponse.tracking_id)
+}
+inline std::string* ShipOrderResponse::mutable_tracking_id() {
+  std::string* _s = _internal_mutable_tracking_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.ShipOrderResponse.tracking_id)
+  return _s;
+}
+inline const std::string& ShipOrderResponse::_internal_tracking_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.tracking_id_.Get();
+}
+inline void ShipOrderResponse::_internal_set_tracking_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.tracking_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* ShipOrderResponse::_internal_mutable_tracking_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.tracking_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* ShipOrderResponse::release_tracking_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.ShipOrderResponse.tracking_id)
+  return _impl_.tracking_id_.Release();
+}
+inline void ShipOrderResponse::set_allocated_tracking_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.tracking_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.tracking_id_.IsDefault()) {
+          _impl_.tracking_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.ShipOrderResponse.tracking_id)
+}
+
+// -------------------------------------------------------------------
+
+// Address
+
+// string street_address = 1;
+inline void Address::clear_street_address() {
+  _impl_.street_address_.ClearToEmpty();
+}
+inline const std::string& Address::street_address() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Address.street_address)
+  return _internal_street_address();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Address::set_street_address(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.street_address_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Address.street_address)
+}
+inline std::string* Address::mutable_street_address() {
+  std::string* _s = _internal_mutable_street_address();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Address.street_address)
+  return _s;
+}
+inline const std::string& Address::_internal_street_address() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.street_address_.Get();
+}
+inline void Address::_internal_set_street_address(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.street_address_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Address::_internal_mutable_street_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.street_address_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Address::release_street_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Address.street_address)
+  return _impl_.street_address_.Release();
+}
+inline void Address::set_allocated_street_address(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.street_address_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.street_address_.IsDefault()) {
+          _impl_.street_address_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Address.street_address)
+}
+
+// string city = 2;
+inline void Address::clear_city() {
+  _impl_.city_.ClearToEmpty();
+}
+inline const std::string& Address::city() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Address.city)
+  return _internal_city();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Address::set_city(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.city_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Address.city)
+}
+inline std::string* Address::mutable_city() {
+  std::string* _s = _internal_mutable_city();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Address.city)
+  return _s;
+}
+inline const std::string& Address::_internal_city() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.city_.Get();
+}
+inline void Address::_internal_set_city(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.city_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Address::_internal_mutable_city() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.city_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Address::release_city() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Address.city)
+  return _impl_.city_.Release();
+}
+inline void Address::set_allocated_city(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.city_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.city_.IsDefault()) {
+          _impl_.city_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Address.city)
+}
+
+// string state = 3;
+inline void Address::clear_state() {
+  _impl_.state_.ClearToEmpty();
+}
+inline const std::string& Address::state() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Address.state)
+  return _internal_state();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Address::set_state(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.state_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Address.state)
+}
+inline std::string* Address::mutable_state() {
+  std::string* _s = _internal_mutable_state();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Address.state)
+  return _s;
+}
+inline const std::string& Address::_internal_state() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.state_.Get();
+}
+inline void Address::_internal_set_state(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.state_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Address::_internal_mutable_state() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.state_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Address::release_state() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Address.state)
+  return _impl_.state_.Release();
+}
+inline void Address::set_allocated_state(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.state_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.state_.IsDefault()) {
+          _impl_.state_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Address.state)
+}
+
+// string country = 4;
+inline void Address::clear_country() {
+  _impl_.country_.ClearToEmpty();
+}
+inline const std::string& Address::country() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Address.country)
+  return _internal_country();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Address::set_country(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.country_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Address.country)
+}
+inline std::string* Address::mutable_country() {
+  std::string* _s = _internal_mutable_country();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Address.country)
+  return _s;
+}
+inline const std::string& Address::_internal_country() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.country_.Get();
+}
+inline void Address::_internal_set_country(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.country_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Address::_internal_mutable_country() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.country_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Address::release_country() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Address.country)
+  return _impl_.country_.Release();
+}
+inline void Address::set_allocated_country(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.country_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.country_.IsDefault()) {
+          _impl_.country_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Address.country)
+}
+
+// string zip_code = 5;
+inline void Address::clear_zip_code() {
+  _impl_.zip_code_.ClearToEmpty();
+}
+inline const std::string& Address::zip_code() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Address.zip_code)
+  return _internal_zip_code();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Address::set_zip_code(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.zip_code_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Address.zip_code)
+}
+inline std::string* Address::mutable_zip_code() {
+  std::string* _s = _internal_mutable_zip_code();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Address.zip_code)
+  return _s;
+}
+inline const std::string& Address::_internal_zip_code() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.zip_code_.Get();
+}
+inline void Address::_internal_set_zip_code(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.zip_code_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Address::_internal_mutable_zip_code() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.zip_code_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Address::release_zip_code() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Address.zip_code)
+  return _impl_.zip_code_.Release();
+}
+inline void Address::set_allocated_zip_code(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.zip_code_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.zip_code_.IsDefault()) {
+          _impl_.zip_code_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Address.zip_code)
+}
+
+// -------------------------------------------------------------------
+
+// Money
+
+// string currency_code = 1;
+inline void Money::clear_currency_code() {
+  _impl_.currency_code_.ClearToEmpty();
+}
+inline const std::string& Money::currency_code() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Money.currency_code)
+  return _internal_currency_code();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Money::set_currency_code(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.currency_code_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Money.currency_code)
+}
+inline std::string* Money::mutable_currency_code() {
+  std::string* _s = _internal_mutable_currency_code();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Money.currency_code)
+  return _s;
+}
+inline const std::string& Money::_internal_currency_code() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.currency_code_.Get();
+}
+inline void Money::_internal_set_currency_code(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.currency_code_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Money::_internal_mutable_currency_code() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.currency_code_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Money::release_currency_code() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Money.currency_code)
+  return _impl_.currency_code_.Release();
+}
+inline void Money::set_allocated_currency_code(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.currency_code_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.currency_code_.IsDefault()) {
+          _impl_.currency_code_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Money.currency_code)
+}
+
+// int64 units = 2;
+inline void Money::clear_units() {
+  _impl_.units_ = ::int64_t{0};
+}
+inline ::int64_t Money::units() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Money.units)
+  return _internal_units();
+}
+inline void Money::set_units(::int64_t value) {
+  _internal_set_units(value);
+  // @@protoc_insertion_point(field_set:oteldemo.Money.units)
+}
+inline ::int64_t Money::_internal_units() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.units_;
+}
+inline void Money::_internal_set_units(::int64_t value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.units_ = value;
+}
+
+// int32 nanos = 3;
+inline void Money::clear_nanos() {
+  _impl_.nanos_ = 0;
+}
+inline ::int32_t Money::nanos() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Money.nanos)
+  return _internal_nanos();
+}
+inline void Money::set_nanos(::int32_t value) {
+  _internal_set_nanos(value);
+  // @@protoc_insertion_point(field_set:oteldemo.Money.nanos)
+}
+inline ::int32_t Money::_internal_nanos() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.nanos_;
+}
+inline void Money::_internal_set_nanos(::int32_t value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.nanos_ = value;
+}
+
+// -------------------------------------------------------------------
+
+// GetSupportedCurrenciesResponse
+
+// repeated string currency_codes = 1;
+inline int GetSupportedCurrenciesResponse::_internal_currency_codes_size() const {
+  return _internal_currency_codes().size();
+}
+inline int GetSupportedCurrenciesResponse::currency_codes_size() const {
+  return _internal_currency_codes_size();
+}
+inline void GetSupportedCurrenciesResponse::clear_currency_codes() {
+  _internal_mutable_currency_codes()->Clear();
+}
+inline std::string* GetSupportedCurrenciesResponse::add_currency_codes() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  std::string* _s = _internal_mutable_currency_codes()->Add();
+  // @@protoc_insertion_point(field_add_mutable:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+  return _s;
+}
+inline const std::string& GetSupportedCurrenciesResponse::currency_codes(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+  return _internal_currency_codes().Get(index);
+}
+inline std::string* GetSupportedCurrenciesResponse::mutable_currency_codes(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+  return _internal_mutable_currency_codes()->Mutable(index);
+}
+inline void GetSupportedCurrenciesResponse::set_currency_codes(int index, const std::string& value) {
+  _internal_mutable_currency_codes()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline void GetSupportedCurrenciesResponse::set_currency_codes(int index, std::string&& value) {
+  _internal_mutable_currency_codes()->Mutable(index)->assign(std::move(value));
+  // @@protoc_insertion_point(field_set:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline void GetSupportedCurrenciesResponse::set_currency_codes(int index, const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  _internal_mutable_currency_codes()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set_char:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline void GetSupportedCurrenciesResponse::set_currency_codes(int index, const char* value,
+                              std::size_t size) {
+  _internal_mutable_currency_codes()->Mutable(index)->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline void GetSupportedCurrenciesResponse::set_currency_codes(int index, absl::string_view value) {
+  _internal_mutable_currency_codes()->Mutable(index)->assign(value.data(),
+                                                     value.size());
+  // @@protoc_insertion_point(field_set_string_piece:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline void GetSupportedCurrenciesResponse::add_currency_codes(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_currency_codes()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline void GetSupportedCurrenciesResponse::add_currency_codes(std::string&& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_currency_codes()->Add(std::move(value));
+  // @@protoc_insertion_point(field_add:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline void GetSupportedCurrenciesResponse::add_currency_codes(const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_currency_codes()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add_char:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline void GetSupportedCurrenciesResponse::add_currency_codes(const char* value, std::size_t size) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_currency_codes()->Add()->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_add_pointer:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline void GetSupportedCurrenciesResponse::add_currency_codes(absl::string_view value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_currency_codes()->Add()->assign(value.data(), value.size());
+  // @@protoc_insertion_point(field_add_string_piece:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+GetSupportedCurrenciesResponse::currency_codes() const {
+  // @@protoc_insertion_point(field_list:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+  return _internal_currency_codes();
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>* GetSupportedCurrenciesResponse::mutable_currency_codes() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.GetSupportedCurrenciesResponse.currency_codes)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_currency_codes();
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+GetSupportedCurrenciesResponse::_internal_currency_codes() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.currency_codes_;
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>*
+GetSupportedCurrenciesResponse::_internal_mutable_currency_codes() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.currency_codes_;
+}
+
+// -------------------------------------------------------------------
+
+// CurrencyConversionRequest
+
+// .oteldemo.Money from = 1;
+inline bool CurrencyConversionRequest::has_from() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.from_ != nullptr);
+  return value;
+}
+inline void CurrencyConversionRequest::clear_from() {
+  if (_impl_.from_ != nullptr) _impl_.from_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Money& CurrencyConversionRequest::_internal_from() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Money* p = _impl_.from_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Money&>(::oteldemo::_Money_default_instance_);
+}
+inline const ::oteldemo::Money& CurrencyConversionRequest::from() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CurrencyConversionRequest.from)
+  return _internal_from();
+}
+inline void CurrencyConversionRequest::unsafe_arena_set_allocated_from(::oteldemo::Money* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.from_);
+  }
+  _impl_.from_ = reinterpret_cast<::oteldemo::Money*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.CurrencyConversionRequest.from)
+}
+inline ::oteldemo::Money* CurrencyConversionRequest::release_from() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* released = _impl_.from_;
+  _impl_.from_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Money* CurrencyConversionRequest::unsafe_arena_release_from() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.CurrencyConversionRequest.from)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* temp = _impl_.from_;
+  _impl_.from_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Money* CurrencyConversionRequest::_internal_mutable_from() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.from_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Money>(GetArenaForAllocation());
+    _impl_.from_ = reinterpret_cast<::oteldemo::Money*>(p);
+  }
+  return _impl_.from_;
+}
+inline ::oteldemo::Money* CurrencyConversionRequest::mutable_from() {
+  ::oteldemo::Money* _msg = _internal_mutable_from();
+  // @@protoc_insertion_point(field_mutable:oteldemo.CurrencyConversionRequest.from)
+  return _msg;
+}
+inline void CurrencyConversionRequest::set_allocated_from(::oteldemo::Money* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Money*>(_impl_.from_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Money*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.from_ = reinterpret_cast<::oteldemo::Money*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.CurrencyConversionRequest.from)
+}
+
+// string to_code = 2;
+inline void CurrencyConversionRequest::clear_to_code() {
+  _impl_.to_code_.ClearToEmpty();
+}
+inline const std::string& CurrencyConversionRequest::to_code() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CurrencyConversionRequest.to_code)
+  return _internal_to_code();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CurrencyConversionRequest::set_to_code(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.to_code_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.CurrencyConversionRequest.to_code)
+}
+inline std::string* CurrencyConversionRequest::mutable_to_code() {
+  std::string* _s = _internal_mutable_to_code();
+  // @@protoc_insertion_point(field_mutable:oteldemo.CurrencyConversionRequest.to_code)
+  return _s;
+}
+inline const std::string& CurrencyConversionRequest::_internal_to_code() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.to_code_.Get();
+}
+inline void CurrencyConversionRequest::_internal_set_to_code(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.to_code_.Set(value, GetArenaForAllocation());
+}
+inline std::string* CurrencyConversionRequest::_internal_mutable_to_code() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.to_code_.Mutable( GetArenaForAllocation());
+}
+inline std::string* CurrencyConversionRequest::release_to_code() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.CurrencyConversionRequest.to_code)
+  return _impl_.to_code_.Release();
+}
+inline void CurrencyConversionRequest::set_allocated_to_code(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.to_code_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.to_code_.IsDefault()) {
+          _impl_.to_code_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.CurrencyConversionRequest.to_code)
+}
+
+// -------------------------------------------------------------------
+
+// CreditCardInfo
+
+// string credit_card_number = 1;
+inline void CreditCardInfo::clear_credit_card_number() {
+  _impl_.credit_card_number_.ClearToEmpty();
+}
+inline const std::string& CreditCardInfo::credit_card_number() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CreditCardInfo.credit_card_number)
+  return _internal_credit_card_number();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CreditCardInfo::set_credit_card_number(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.credit_card_number_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.CreditCardInfo.credit_card_number)
+}
+inline std::string* CreditCardInfo::mutable_credit_card_number() {
+  std::string* _s = _internal_mutable_credit_card_number();
+  // @@protoc_insertion_point(field_mutable:oteldemo.CreditCardInfo.credit_card_number)
+  return _s;
+}
+inline const std::string& CreditCardInfo::_internal_credit_card_number() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.credit_card_number_.Get();
+}
+inline void CreditCardInfo::_internal_set_credit_card_number(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.credit_card_number_.Set(value, GetArenaForAllocation());
+}
+inline std::string* CreditCardInfo::_internal_mutable_credit_card_number() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.credit_card_number_.Mutable( GetArenaForAllocation());
+}
+inline std::string* CreditCardInfo::release_credit_card_number() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.CreditCardInfo.credit_card_number)
+  return _impl_.credit_card_number_.Release();
+}
+inline void CreditCardInfo::set_allocated_credit_card_number(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.credit_card_number_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.credit_card_number_.IsDefault()) {
+          _impl_.credit_card_number_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.CreditCardInfo.credit_card_number)
+}
+
+// int32 credit_card_cvv = 2;
+inline void CreditCardInfo::clear_credit_card_cvv() {
+  _impl_.credit_card_cvv_ = 0;
+}
+inline ::int32_t CreditCardInfo::credit_card_cvv() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CreditCardInfo.credit_card_cvv)
+  return _internal_credit_card_cvv();
+}
+inline void CreditCardInfo::set_credit_card_cvv(::int32_t value) {
+  _internal_set_credit_card_cvv(value);
+  // @@protoc_insertion_point(field_set:oteldemo.CreditCardInfo.credit_card_cvv)
+}
+inline ::int32_t CreditCardInfo::_internal_credit_card_cvv() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.credit_card_cvv_;
+}
+inline void CreditCardInfo::_internal_set_credit_card_cvv(::int32_t value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.credit_card_cvv_ = value;
+}
+
+// int32 credit_card_expiration_year = 3;
+inline void CreditCardInfo::clear_credit_card_expiration_year() {
+  _impl_.credit_card_expiration_year_ = 0;
+}
+inline ::int32_t CreditCardInfo::credit_card_expiration_year() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CreditCardInfo.credit_card_expiration_year)
+  return _internal_credit_card_expiration_year();
+}
+inline void CreditCardInfo::set_credit_card_expiration_year(::int32_t value) {
+  _internal_set_credit_card_expiration_year(value);
+  // @@protoc_insertion_point(field_set:oteldemo.CreditCardInfo.credit_card_expiration_year)
+}
+inline ::int32_t CreditCardInfo::_internal_credit_card_expiration_year() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.credit_card_expiration_year_;
+}
+inline void CreditCardInfo::_internal_set_credit_card_expiration_year(::int32_t value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.credit_card_expiration_year_ = value;
+}
+
+// int32 credit_card_expiration_month = 4;
+inline void CreditCardInfo::clear_credit_card_expiration_month() {
+  _impl_.credit_card_expiration_month_ = 0;
+}
+inline ::int32_t CreditCardInfo::credit_card_expiration_month() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CreditCardInfo.credit_card_expiration_month)
+  return _internal_credit_card_expiration_month();
+}
+inline void CreditCardInfo::set_credit_card_expiration_month(::int32_t value) {
+  _internal_set_credit_card_expiration_month(value);
+  // @@protoc_insertion_point(field_set:oteldemo.CreditCardInfo.credit_card_expiration_month)
+}
+inline ::int32_t CreditCardInfo::_internal_credit_card_expiration_month() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.credit_card_expiration_month_;
+}
+inline void CreditCardInfo::_internal_set_credit_card_expiration_month(::int32_t value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.credit_card_expiration_month_ = value;
+}
+
+// -------------------------------------------------------------------
+
+// ChargeRequest
+
+// .oteldemo.Money amount = 1;
+inline bool ChargeRequest::has_amount() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.amount_ != nullptr);
+  return value;
+}
+inline void ChargeRequest::clear_amount() {
+  if (_impl_.amount_ != nullptr) _impl_.amount_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Money& ChargeRequest::_internal_amount() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Money* p = _impl_.amount_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Money&>(::oteldemo::_Money_default_instance_);
+}
+inline const ::oteldemo::Money& ChargeRequest::amount() const {
+  // @@protoc_insertion_point(field_get:oteldemo.ChargeRequest.amount)
+  return _internal_amount();
+}
+inline void ChargeRequest::unsafe_arena_set_allocated_amount(::oteldemo::Money* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.amount_);
+  }
+  _impl_.amount_ = reinterpret_cast<::oteldemo::Money*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.ChargeRequest.amount)
+}
+inline ::oteldemo::Money* ChargeRequest::release_amount() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* released = _impl_.amount_;
+  _impl_.amount_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Money* ChargeRequest::unsafe_arena_release_amount() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.ChargeRequest.amount)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* temp = _impl_.amount_;
+  _impl_.amount_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Money* ChargeRequest::_internal_mutable_amount() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.amount_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Money>(GetArenaForAllocation());
+    _impl_.amount_ = reinterpret_cast<::oteldemo::Money*>(p);
+  }
+  return _impl_.amount_;
+}
+inline ::oteldemo::Money* ChargeRequest::mutable_amount() {
+  ::oteldemo::Money* _msg = _internal_mutable_amount();
+  // @@protoc_insertion_point(field_mutable:oteldemo.ChargeRequest.amount)
+  return _msg;
+}
+inline void ChargeRequest::set_allocated_amount(::oteldemo::Money* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Money*>(_impl_.amount_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Money*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.amount_ = reinterpret_cast<::oteldemo::Money*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.ChargeRequest.amount)
+}
+
+// .oteldemo.CreditCardInfo credit_card = 2;
+inline bool ChargeRequest::has_credit_card() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.credit_card_ != nullptr);
+  return value;
+}
+inline void ChargeRequest::clear_credit_card() {
+  if (_impl_.credit_card_ != nullptr) _impl_.credit_card_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000002u;
+}
+inline const ::oteldemo::CreditCardInfo& ChargeRequest::_internal_credit_card() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::CreditCardInfo* p = _impl_.credit_card_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::CreditCardInfo&>(::oteldemo::_CreditCardInfo_default_instance_);
+}
+inline const ::oteldemo::CreditCardInfo& ChargeRequest::credit_card() const {
+  // @@protoc_insertion_point(field_get:oteldemo.ChargeRequest.credit_card)
+  return _internal_credit_card();
+}
+inline void ChargeRequest::unsafe_arena_set_allocated_credit_card(::oteldemo::CreditCardInfo* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.credit_card_);
+  }
+  _impl_.credit_card_ = reinterpret_cast<::oteldemo::CreditCardInfo*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.ChargeRequest.credit_card)
+}
+inline ::oteldemo::CreditCardInfo* ChargeRequest::release_credit_card() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::oteldemo::CreditCardInfo* released = _impl_.credit_card_;
+  _impl_.credit_card_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::CreditCardInfo* ChargeRequest::unsafe_arena_release_credit_card() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.ChargeRequest.credit_card)
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::oteldemo::CreditCardInfo* temp = _impl_.credit_card_;
+  _impl_.credit_card_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::CreditCardInfo* ChargeRequest::_internal_mutable_credit_card() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000002u;
+  if (_impl_.credit_card_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::CreditCardInfo>(GetArenaForAllocation());
+    _impl_.credit_card_ = reinterpret_cast<::oteldemo::CreditCardInfo*>(p);
+  }
+  return _impl_.credit_card_;
+}
+inline ::oteldemo::CreditCardInfo* ChargeRequest::mutable_credit_card() {
+  ::oteldemo::CreditCardInfo* _msg = _internal_mutable_credit_card();
+  // @@protoc_insertion_point(field_mutable:oteldemo.ChargeRequest.credit_card)
+  return _msg;
+}
+inline void ChargeRequest::set_allocated_credit_card(::oteldemo::CreditCardInfo* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::CreditCardInfo*>(_impl_.credit_card_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::CreditCardInfo*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+
+  _impl_.credit_card_ = reinterpret_cast<::oteldemo::CreditCardInfo*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.ChargeRequest.credit_card)
+}
+
+// -------------------------------------------------------------------
+
+// ChargeResponse
+
+// string transaction_id = 1;
+inline void ChargeResponse::clear_transaction_id() {
+  _impl_.transaction_id_.ClearToEmpty();
+}
+inline const std::string& ChargeResponse::transaction_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.ChargeResponse.transaction_id)
+  return _internal_transaction_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void ChargeResponse::set_transaction_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.transaction_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.ChargeResponse.transaction_id)
+}
+inline std::string* ChargeResponse::mutable_transaction_id() {
+  std::string* _s = _internal_mutable_transaction_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.ChargeResponse.transaction_id)
+  return _s;
+}
+inline const std::string& ChargeResponse::_internal_transaction_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.transaction_id_.Get();
+}
+inline void ChargeResponse::_internal_set_transaction_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.transaction_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* ChargeResponse::_internal_mutable_transaction_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.transaction_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* ChargeResponse::release_transaction_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.ChargeResponse.transaction_id)
+  return _impl_.transaction_id_.Release();
+}
+inline void ChargeResponse::set_allocated_transaction_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.transaction_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.transaction_id_.IsDefault()) {
+          _impl_.transaction_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.ChargeResponse.transaction_id)
+}
+
+// -------------------------------------------------------------------
+
+// OrderItem
+
+// .oteldemo.CartItem item = 1;
+inline bool OrderItem::has_item() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.item_ != nullptr);
+  return value;
+}
+inline void OrderItem::clear_item() {
+  if (_impl_.item_ != nullptr) _impl_.item_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::CartItem& OrderItem::_internal_item() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::CartItem* p = _impl_.item_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::CartItem&>(::oteldemo::_CartItem_default_instance_);
+}
+inline const ::oteldemo::CartItem& OrderItem::item() const {
+  // @@protoc_insertion_point(field_get:oteldemo.OrderItem.item)
+  return _internal_item();
+}
+inline void OrderItem::unsafe_arena_set_allocated_item(::oteldemo::CartItem* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.item_);
+  }
+  _impl_.item_ = reinterpret_cast<::oteldemo::CartItem*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.OrderItem.item)
+}
+inline ::oteldemo::CartItem* OrderItem::release_item() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::CartItem* released = _impl_.item_;
+  _impl_.item_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::CartItem* OrderItem::unsafe_arena_release_item() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.OrderItem.item)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::CartItem* temp = _impl_.item_;
+  _impl_.item_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::CartItem* OrderItem::_internal_mutable_item() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.item_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::CartItem>(GetArenaForAllocation());
+    _impl_.item_ = reinterpret_cast<::oteldemo::CartItem*>(p);
+  }
+  return _impl_.item_;
+}
+inline ::oteldemo::CartItem* OrderItem::mutable_item() {
+  ::oteldemo::CartItem* _msg = _internal_mutable_item();
+  // @@protoc_insertion_point(field_mutable:oteldemo.OrderItem.item)
+  return _msg;
+}
+inline void OrderItem::set_allocated_item(::oteldemo::CartItem* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::CartItem*>(_impl_.item_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::CartItem*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.item_ = reinterpret_cast<::oteldemo::CartItem*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.OrderItem.item)
+}
+
+// .oteldemo.Money cost = 2;
+inline bool OrderItem::has_cost() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.cost_ != nullptr);
+  return value;
+}
+inline void OrderItem::clear_cost() {
+  if (_impl_.cost_ != nullptr) _impl_.cost_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000002u;
+}
+inline const ::oteldemo::Money& OrderItem::_internal_cost() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Money* p = _impl_.cost_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Money&>(::oteldemo::_Money_default_instance_);
+}
+inline const ::oteldemo::Money& OrderItem::cost() const {
+  // @@protoc_insertion_point(field_get:oteldemo.OrderItem.cost)
+  return _internal_cost();
+}
+inline void OrderItem::unsafe_arena_set_allocated_cost(::oteldemo::Money* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.cost_);
+  }
+  _impl_.cost_ = reinterpret_cast<::oteldemo::Money*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.OrderItem.cost)
+}
+inline ::oteldemo::Money* OrderItem::release_cost() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::oteldemo::Money* released = _impl_.cost_;
+  _impl_.cost_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Money* OrderItem::unsafe_arena_release_cost() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.OrderItem.cost)
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::oteldemo::Money* temp = _impl_.cost_;
+  _impl_.cost_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Money* OrderItem::_internal_mutable_cost() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000002u;
+  if (_impl_.cost_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Money>(GetArenaForAllocation());
+    _impl_.cost_ = reinterpret_cast<::oteldemo::Money*>(p);
+  }
+  return _impl_.cost_;
+}
+inline ::oteldemo::Money* OrderItem::mutable_cost() {
+  ::oteldemo::Money* _msg = _internal_mutable_cost();
+  // @@protoc_insertion_point(field_mutable:oteldemo.OrderItem.cost)
+  return _msg;
+}
+inline void OrderItem::set_allocated_cost(::oteldemo::Money* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Money*>(_impl_.cost_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Money*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+
+  _impl_.cost_ = reinterpret_cast<::oteldemo::Money*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.OrderItem.cost)
+}
+
+// -------------------------------------------------------------------
+
+// OrderResult
+
+// string order_id = 1;
+inline void OrderResult::clear_order_id() {
+  _impl_.order_id_.ClearToEmpty();
+}
+inline const std::string& OrderResult::order_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.OrderResult.order_id)
+  return _internal_order_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void OrderResult::set_order_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.order_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.OrderResult.order_id)
+}
+inline std::string* OrderResult::mutable_order_id() {
+  std::string* _s = _internal_mutable_order_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.OrderResult.order_id)
+  return _s;
+}
+inline const std::string& OrderResult::_internal_order_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.order_id_.Get();
+}
+inline void OrderResult::_internal_set_order_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.order_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* OrderResult::_internal_mutable_order_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.order_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* OrderResult::release_order_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.OrderResult.order_id)
+  return _impl_.order_id_.Release();
+}
+inline void OrderResult::set_allocated_order_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.order_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.order_id_.IsDefault()) {
+          _impl_.order_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.OrderResult.order_id)
+}
+
+// string shipping_tracking_id = 2;
+inline void OrderResult::clear_shipping_tracking_id() {
+  _impl_.shipping_tracking_id_.ClearToEmpty();
+}
+inline const std::string& OrderResult::shipping_tracking_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.OrderResult.shipping_tracking_id)
+  return _internal_shipping_tracking_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void OrderResult::set_shipping_tracking_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.shipping_tracking_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.OrderResult.shipping_tracking_id)
+}
+inline std::string* OrderResult::mutable_shipping_tracking_id() {
+  std::string* _s = _internal_mutable_shipping_tracking_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.OrderResult.shipping_tracking_id)
+  return _s;
+}
+inline const std::string& OrderResult::_internal_shipping_tracking_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.shipping_tracking_id_.Get();
+}
+inline void OrderResult::_internal_set_shipping_tracking_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.shipping_tracking_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* OrderResult::_internal_mutable_shipping_tracking_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.shipping_tracking_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* OrderResult::release_shipping_tracking_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.OrderResult.shipping_tracking_id)
+  return _impl_.shipping_tracking_id_.Release();
+}
+inline void OrderResult::set_allocated_shipping_tracking_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.shipping_tracking_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.shipping_tracking_id_.IsDefault()) {
+          _impl_.shipping_tracking_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.OrderResult.shipping_tracking_id)
+}
+
+// .oteldemo.Money shipping_cost = 3;
+inline bool OrderResult::has_shipping_cost() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.shipping_cost_ != nullptr);
+  return value;
+}
+inline void OrderResult::clear_shipping_cost() {
+  if (_impl_.shipping_cost_ != nullptr) _impl_.shipping_cost_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Money& OrderResult::_internal_shipping_cost() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Money* p = _impl_.shipping_cost_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Money&>(::oteldemo::_Money_default_instance_);
+}
+inline const ::oteldemo::Money& OrderResult::shipping_cost() const {
+  // @@protoc_insertion_point(field_get:oteldemo.OrderResult.shipping_cost)
+  return _internal_shipping_cost();
+}
+inline void OrderResult::unsafe_arena_set_allocated_shipping_cost(::oteldemo::Money* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.shipping_cost_);
+  }
+  _impl_.shipping_cost_ = reinterpret_cast<::oteldemo::Money*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.OrderResult.shipping_cost)
+}
+inline ::oteldemo::Money* OrderResult::release_shipping_cost() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* released = _impl_.shipping_cost_;
+  _impl_.shipping_cost_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Money* OrderResult::unsafe_arena_release_shipping_cost() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.OrderResult.shipping_cost)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Money* temp = _impl_.shipping_cost_;
+  _impl_.shipping_cost_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Money* OrderResult::_internal_mutable_shipping_cost() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.shipping_cost_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Money>(GetArenaForAllocation());
+    _impl_.shipping_cost_ = reinterpret_cast<::oteldemo::Money*>(p);
+  }
+  return _impl_.shipping_cost_;
+}
+inline ::oteldemo::Money* OrderResult::mutable_shipping_cost() {
+  ::oteldemo::Money* _msg = _internal_mutable_shipping_cost();
+  // @@protoc_insertion_point(field_mutable:oteldemo.OrderResult.shipping_cost)
+  return _msg;
+}
+inline void OrderResult::set_allocated_shipping_cost(::oteldemo::Money* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Money*>(_impl_.shipping_cost_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Money*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.shipping_cost_ = reinterpret_cast<::oteldemo::Money*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.OrderResult.shipping_cost)
+}
+
+// .oteldemo.Address shipping_address = 4;
+inline bool OrderResult::has_shipping_address() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.shipping_address_ != nullptr);
+  return value;
+}
+inline void OrderResult::clear_shipping_address() {
+  if (_impl_.shipping_address_ != nullptr) _impl_.shipping_address_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000002u;
+}
+inline const ::oteldemo::Address& OrderResult::_internal_shipping_address() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Address* p = _impl_.shipping_address_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Address&>(::oteldemo::_Address_default_instance_);
+}
+inline const ::oteldemo::Address& OrderResult::shipping_address() const {
+  // @@protoc_insertion_point(field_get:oteldemo.OrderResult.shipping_address)
+  return _internal_shipping_address();
+}
+inline void OrderResult::unsafe_arena_set_allocated_shipping_address(::oteldemo::Address* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.shipping_address_);
+  }
+  _impl_.shipping_address_ = reinterpret_cast<::oteldemo::Address*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.OrderResult.shipping_address)
+}
+inline ::oteldemo::Address* OrderResult::release_shipping_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::oteldemo::Address* released = _impl_.shipping_address_;
+  _impl_.shipping_address_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Address* OrderResult::unsafe_arena_release_shipping_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.OrderResult.shipping_address)
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::oteldemo::Address* temp = _impl_.shipping_address_;
+  _impl_.shipping_address_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Address* OrderResult::_internal_mutable_shipping_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000002u;
+  if (_impl_.shipping_address_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Address>(GetArenaForAllocation());
+    _impl_.shipping_address_ = reinterpret_cast<::oteldemo::Address*>(p);
+  }
+  return _impl_.shipping_address_;
+}
+inline ::oteldemo::Address* OrderResult::mutable_shipping_address() {
+  ::oteldemo::Address* _msg = _internal_mutable_shipping_address();
+  // @@protoc_insertion_point(field_mutable:oteldemo.OrderResult.shipping_address)
+  return _msg;
+}
+inline void OrderResult::set_allocated_shipping_address(::oteldemo::Address* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Address*>(_impl_.shipping_address_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Address*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+
+  _impl_.shipping_address_ = reinterpret_cast<::oteldemo::Address*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.OrderResult.shipping_address)
+}
+
+// repeated .oteldemo.OrderItem items = 5;
+inline int OrderResult::_internal_items_size() const {
+  return _internal_items().size();
+}
+inline int OrderResult::items_size() const {
+  return _internal_items_size();
+}
+inline void OrderResult::clear_items() {
+  _internal_mutable_items()->Clear();
+}
+inline ::oteldemo::OrderItem* OrderResult::mutable_items(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.OrderResult.items)
+  return _internal_mutable_items()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField< ::oteldemo::OrderItem >*
+OrderResult::mutable_items() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.OrderResult.items)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_items();
+}
+inline const ::oteldemo::OrderItem& OrderResult::items(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.OrderResult.items)
+    return _internal_items().Get(index);
+}
+inline ::oteldemo::OrderItem* OrderResult::add_items() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::oteldemo::OrderItem* _add = _internal_mutable_items()->Add();
+  // @@protoc_insertion_point(field_add:oteldemo.OrderResult.items)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField< ::oteldemo::OrderItem >&
+OrderResult::items() const {
+  // @@protoc_insertion_point(field_list:oteldemo.OrderResult.items)
+  return _internal_items();
+}
+inline const ::google::protobuf::RepeatedPtrField<::oteldemo::OrderItem>&
+OrderResult::_internal_items() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.items_;
+}
+inline ::google::protobuf::RepeatedPtrField<::oteldemo::OrderItem>*
+OrderResult::_internal_mutable_items() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.items_;
+}
+
+// -------------------------------------------------------------------
+
+// SendOrderConfirmationRequest
+
+// string email = 1;
+inline void SendOrderConfirmationRequest::clear_email() {
+  _impl_.email_.ClearToEmpty();
+}
+inline const std::string& SendOrderConfirmationRequest::email() const {
+  // @@protoc_insertion_point(field_get:oteldemo.SendOrderConfirmationRequest.email)
+  return _internal_email();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void SendOrderConfirmationRequest::set_email(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.email_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.SendOrderConfirmationRequest.email)
+}
+inline std::string* SendOrderConfirmationRequest::mutable_email() {
+  std::string* _s = _internal_mutable_email();
+  // @@protoc_insertion_point(field_mutable:oteldemo.SendOrderConfirmationRequest.email)
+  return _s;
+}
+inline const std::string& SendOrderConfirmationRequest::_internal_email() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.email_.Get();
+}
+inline void SendOrderConfirmationRequest::_internal_set_email(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.email_.Set(value, GetArenaForAllocation());
+}
+inline std::string* SendOrderConfirmationRequest::_internal_mutable_email() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.email_.Mutable( GetArenaForAllocation());
+}
+inline std::string* SendOrderConfirmationRequest::release_email() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.SendOrderConfirmationRequest.email)
+  return _impl_.email_.Release();
+}
+inline void SendOrderConfirmationRequest::set_allocated_email(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.email_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.email_.IsDefault()) {
+          _impl_.email_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.SendOrderConfirmationRequest.email)
+}
+
+// .oteldemo.OrderResult order = 2;
+inline bool SendOrderConfirmationRequest::has_order() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.order_ != nullptr);
+  return value;
+}
+inline void SendOrderConfirmationRequest::clear_order() {
+  if (_impl_.order_ != nullptr) _impl_.order_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::OrderResult& SendOrderConfirmationRequest::_internal_order() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::OrderResult* p = _impl_.order_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::OrderResult&>(::oteldemo::_OrderResult_default_instance_);
+}
+inline const ::oteldemo::OrderResult& SendOrderConfirmationRequest::order() const {
+  // @@protoc_insertion_point(field_get:oteldemo.SendOrderConfirmationRequest.order)
+  return _internal_order();
+}
+inline void SendOrderConfirmationRequest::unsafe_arena_set_allocated_order(::oteldemo::OrderResult* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.order_);
+  }
+  _impl_.order_ = reinterpret_cast<::oteldemo::OrderResult*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.SendOrderConfirmationRequest.order)
+}
+inline ::oteldemo::OrderResult* SendOrderConfirmationRequest::release_order() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::OrderResult* released = _impl_.order_;
+  _impl_.order_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::OrderResult* SendOrderConfirmationRequest::unsafe_arena_release_order() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.SendOrderConfirmationRequest.order)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::OrderResult* temp = _impl_.order_;
+  _impl_.order_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::OrderResult* SendOrderConfirmationRequest::_internal_mutable_order() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.order_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::OrderResult>(GetArenaForAllocation());
+    _impl_.order_ = reinterpret_cast<::oteldemo::OrderResult*>(p);
+  }
+  return _impl_.order_;
+}
+inline ::oteldemo::OrderResult* SendOrderConfirmationRequest::mutable_order() {
+  ::oteldemo::OrderResult* _msg = _internal_mutable_order();
+  // @@protoc_insertion_point(field_mutable:oteldemo.SendOrderConfirmationRequest.order)
+  return _msg;
+}
+inline void SendOrderConfirmationRequest::set_allocated_order(::oteldemo::OrderResult* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::OrderResult*>(_impl_.order_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::OrderResult*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.order_ = reinterpret_cast<::oteldemo::OrderResult*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.SendOrderConfirmationRequest.order)
+}
+
+// -------------------------------------------------------------------
+
+// PlaceOrderRequest
+
+// string user_id = 1;
+inline void PlaceOrderRequest::clear_user_id() {
+  _impl_.user_id_.ClearToEmpty();
+}
+inline const std::string& PlaceOrderRequest::user_id() const {
+  // @@protoc_insertion_point(field_get:oteldemo.PlaceOrderRequest.user_id)
+  return _internal_user_id();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void PlaceOrderRequest::set_user_id(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.PlaceOrderRequest.user_id)
+}
+inline std::string* PlaceOrderRequest::mutable_user_id() {
+  std::string* _s = _internal_mutable_user_id();
+  // @@protoc_insertion_point(field_mutable:oteldemo.PlaceOrderRequest.user_id)
+  return _s;
+}
+inline const std::string& PlaceOrderRequest::_internal_user_id() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.user_id_.Get();
+}
+inline void PlaceOrderRequest::_internal_set_user_id(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_id_.Set(value, GetArenaForAllocation());
+}
+inline std::string* PlaceOrderRequest::_internal_mutable_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.user_id_.Mutable( GetArenaForAllocation());
+}
+inline std::string* PlaceOrderRequest::release_user_id() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.PlaceOrderRequest.user_id)
+  return _impl_.user_id_.Release();
+}
+inline void PlaceOrderRequest::set_allocated_user_id(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.user_id_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.user_id_.IsDefault()) {
+          _impl_.user_id_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.PlaceOrderRequest.user_id)
+}
+
+// string user_currency = 2;
+inline void PlaceOrderRequest::clear_user_currency() {
+  _impl_.user_currency_.ClearToEmpty();
+}
+inline const std::string& PlaceOrderRequest::user_currency() const {
+  // @@protoc_insertion_point(field_get:oteldemo.PlaceOrderRequest.user_currency)
+  return _internal_user_currency();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void PlaceOrderRequest::set_user_currency(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_currency_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.PlaceOrderRequest.user_currency)
+}
+inline std::string* PlaceOrderRequest::mutable_user_currency() {
+  std::string* _s = _internal_mutable_user_currency();
+  // @@protoc_insertion_point(field_mutable:oteldemo.PlaceOrderRequest.user_currency)
+  return _s;
+}
+inline const std::string& PlaceOrderRequest::_internal_user_currency() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.user_currency_.Get();
+}
+inline void PlaceOrderRequest::_internal_set_user_currency(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.user_currency_.Set(value, GetArenaForAllocation());
+}
+inline std::string* PlaceOrderRequest::_internal_mutable_user_currency() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.user_currency_.Mutable( GetArenaForAllocation());
+}
+inline std::string* PlaceOrderRequest::release_user_currency() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.PlaceOrderRequest.user_currency)
+  return _impl_.user_currency_.Release();
+}
+inline void PlaceOrderRequest::set_allocated_user_currency(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.user_currency_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.user_currency_.IsDefault()) {
+          _impl_.user_currency_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.PlaceOrderRequest.user_currency)
+}
+
+// .oteldemo.Address address = 3;
+inline bool PlaceOrderRequest::has_address() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.address_ != nullptr);
+  return value;
+}
+inline void PlaceOrderRequest::clear_address() {
+  if (_impl_.address_ != nullptr) _impl_.address_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Address& PlaceOrderRequest::_internal_address() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Address* p = _impl_.address_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Address&>(::oteldemo::_Address_default_instance_);
+}
+inline const ::oteldemo::Address& PlaceOrderRequest::address() const {
+  // @@protoc_insertion_point(field_get:oteldemo.PlaceOrderRequest.address)
+  return _internal_address();
+}
+inline void PlaceOrderRequest::unsafe_arena_set_allocated_address(::oteldemo::Address* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.address_);
+  }
+  _impl_.address_ = reinterpret_cast<::oteldemo::Address*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.PlaceOrderRequest.address)
+}
+inline ::oteldemo::Address* PlaceOrderRequest::release_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Address* released = _impl_.address_;
+  _impl_.address_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Address* PlaceOrderRequest::unsafe_arena_release_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.PlaceOrderRequest.address)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Address* temp = _impl_.address_;
+  _impl_.address_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Address* PlaceOrderRequest::_internal_mutable_address() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.address_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Address>(GetArenaForAllocation());
+    _impl_.address_ = reinterpret_cast<::oteldemo::Address*>(p);
+  }
+  return _impl_.address_;
+}
+inline ::oteldemo::Address* PlaceOrderRequest::mutable_address() {
+  ::oteldemo::Address* _msg = _internal_mutable_address();
+  // @@protoc_insertion_point(field_mutable:oteldemo.PlaceOrderRequest.address)
+  return _msg;
+}
+inline void PlaceOrderRequest::set_allocated_address(::oteldemo::Address* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Address*>(_impl_.address_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Address*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.address_ = reinterpret_cast<::oteldemo::Address*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.PlaceOrderRequest.address)
+}
+
+// string email = 5;
+inline void PlaceOrderRequest::clear_email() {
+  _impl_.email_.ClearToEmpty();
+}
+inline const std::string& PlaceOrderRequest::email() const {
+  // @@protoc_insertion_point(field_get:oteldemo.PlaceOrderRequest.email)
+  return _internal_email();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void PlaceOrderRequest::set_email(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.email_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.PlaceOrderRequest.email)
+}
+inline std::string* PlaceOrderRequest::mutable_email() {
+  std::string* _s = _internal_mutable_email();
+  // @@protoc_insertion_point(field_mutable:oteldemo.PlaceOrderRequest.email)
+  return _s;
+}
+inline const std::string& PlaceOrderRequest::_internal_email() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.email_.Get();
+}
+inline void PlaceOrderRequest::_internal_set_email(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.email_.Set(value, GetArenaForAllocation());
+}
+inline std::string* PlaceOrderRequest::_internal_mutable_email() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.email_.Mutable( GetArenaForAllocation());
+}
+inline std::string* PlaceOrderRequest::release_email() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.PlaceOrderRequest.email)
+  return _impl_.email_.Release();
+}
+inline void PlaceOrderRequest::set_allocated_email(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.email_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.email_.IsDefault()) {
+          _impl_.email_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.PlaceOrderRequest.email)
+}
+
+// .oteldemo.CreditCardInfo credit_card = 6;
+inline bool PlaceOrderRequest::has_credit_card() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000002u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.credit_card_ != nullptr);
+  return value;
+}
+inline void PlaceOrderRequest::clear_credit_card() {
+  if (_impl_.credit_card_ != nullptr) _impl_.credit_card_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000002u;
+}
+inline const ::oteldemo::CreditCardInfo& PlaceOrderRequest::_internal_credit_card() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::CreditCardInfo* p = _impl_.credit_card_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::CreditCardInfo&>(::oteldemo::_CreditCardInfo_default_instance_);
+}
+inline const ::oteldemo::CreditCardInfo& PlaceOrderRequest::credit_card() const {
+  // @@protoc_insertion_point(field_get:oteldemo.PlaceOrderRequest.credit_card)
+  return _internal_credit_card();
+}
+inline void PlaceOrderRequest::unsafe_arena_set_allocated_credit_card(::oteldemo::CreditCardInfo* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.credit_card_);
+  }
+  _impl_.credit_card_ = reinterpret_cast<::oteldemo::CreditCardInfo*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.PlaceOrderRequest.credit_card)
+}
+inline ::oteldemo::CreditCardInfo* PlaceOrderRequest::release_credit_card() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::oteldemo::CreditCardInfo* released = _impl_.credit_card_;
+  _impl_.credit_card_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::CreditCardInfo* PlaceOrderRequest::unsafe_arena_release_credit_card() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.PlaceOrderRequest.credit_card)
+
+  _impl_._has_bits_[0] &= ~0x00000002u;
+  ::oteldemo::CreditCardInfo* temp = _impl_.credit_card_;
+  _impl_.credit_card_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::CreditCardInfo* PlaceOrderRequest::_internal_mutable_credit_card() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000002u;
+  if (_impl_.credit_card_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::CreditCardInfo>(GetArenaForAllocation());
+    _impl_.credit_card_ = reinterpret_cast<::oteldemo::CreditCardInfo*>(p);
+  }
+  return _impl_.credit_card_;
+}
+inline ::oteldemo::CreditCardInfo* PlaceOrderRequest::mutable_credit_card() {
+  ::oteldemo::CreditCardInfo* _msg = _internal_mutable_credit_card();
+  // @@protoc_insertion_point(field_mutable:oteldemo.PlaceOrderRequest.credit_card)
+  return _msg;
+}
+inline void PlaceOrderRequest::set_allocated_credit_card(::oteldemo::CreditCardInfo* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::CreditCardInfo*>(_impl_.credit_card_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::CreditCardInfo*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000002u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000002u;
+  }
+
+  _impl_.credit_card_ = reinterpret_cast<::oteldemo::CreditCardInfo*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.PlaceOrderRequest.credit_card)
+}
+
+// -------------------------------------------------------------------
+
+// PlaceOrderResponse
+
+// .oteldemo.OrderResult order = 1;
+inline bool PlaceOrderResponse::has_order() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.order_ != nullptr);
+  return value;
+}
+inline void PlaceOrderResponse::clear_order() {
+  if (_impl_.order_ != nullptr) _impl_.order_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::OrderResult& PlaceOrderResponse::_internal_order() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::OrderResult* p = _impl_.order_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::OrderResult&>(::oteldemo::_OrderResult_default_instance_);
+}
+inline const ::oteldemo::OrderResult& PlaceOrderResponse::order() const {
+  // @@protoc_insertion_point(field_get:oteldemo.PlaceOrderResponse.order)
+  return _internal_order();
+}
+inline void PlaceOrderResponse::unsafe_arena_set_allocated_order(::oteldemo::OrderResult* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.order_);
+  }
+  _impl_.order_ = reinterpret_cast<::oteldemo::OrderResult*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.PlaceOrderResponse.order)
+}
+inline ::oteldemo::OrderResult* PlaceOrderResponse::release_order() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::OrderResult* released = _impl_.order_;
+  _impl_.order_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::OrderResult* PlaceOrderResponse::unsafe_arena_release_order() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.PlaceOrderResponse.order)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::OrderResult* temp = _impl_.order_;
+  _impl_.order_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::OrderResult* PlaceOrderResponse::_internal_mutable_order() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.order_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::OrderResult>(GetArenaForAllocation());
+    _impl_.order_ = reinterpret_cast<::oteldemo::OrderResult*>(p);
+  }
+  return _impl_.order_;
+}
+inline ::oteldemo::OrderResult* PlaceOrderResponse::mutable_order() {
+  ::oteldemo::OrderResult* _msg = _internal_mutable_order();
+  // @@protoc_insertion_point(field_mutable:oteldemo.PlaceOrderResponse.order)
+  return _msg;
+}
+inline void PlaceOrderResponse::set_allocated_order(::oteldemo::OrderResult* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::OrderResult*>(_impl_.order_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::OrderResult*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.order_ = reinterpret_cast<::oteldemo::OrderResult*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.PlaceOrderResponse.order)
+}
+
+// -------------------------------------------------------------------
+
+// AdRequest
+
+// repeated string context_keys = 1;
+inline int AdRequest::_internal_context_keys_size() const {
+  return _internal_context_keys().size();
+}
+inline int AdRequest::context_keys_size() const {
+  return _internal_context_keys_size();
+}
+inline void AdRequest::clear_context_keys() {
+  _internal_mutable_context_keys()->Clear();
+}
+inline std::string* AdRequest::add_context_keys() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  std::string* _s = _internal_mutable_context_keys()->Add();
+  // @@protoc_insertion_point(field_add_mutable:oteldemo.AdRequest.context_keys)
+  return _s;
+}
+inline const std::string& AdRequest::context_keys(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.AdRequest.context_keys)
+  return _internal_context_keys().Get(index);
+}
+inline std::string* AdRequest::mutable_context_keys(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.AdRequest.context_keys)
+  return _internal_mutable_context_keys()->Mutable(index);
+}
+inline void AdRequest::set_context_keys(int index, const std::string& value) {
+  _internal_mutable_context_keys()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set:oteldemo.AdRequest.context_keys)
+}
+inline void AdRequest::set_context_keys(int index, std::string&& value) {
+  _internal_mutable_context_keys()->Mutable(index)->assign(std::move(value));
+  // @@protoc_insertion_point(field_set:oteldemo.AdRequest.context_keys)
+}
+inline void AdRequest::set_context_keys(int index, const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  _internal_mutable_context_keys()->Mutable(index)->assign(value);
+  // @@protoc_insertion_point(field_set_char:oteldemo.AdRequest.context_keys)
+}
+inline void AdRequest::set_context_keys(int index, const char* value,
+                              std::size_t size) {
+  _internal_mutable_context_keys()->Mutable(index)->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_set_pointer:oteldemo.AdRequest.context_keys)
+}
+inline void AdRequest::set_context_keys(int index, absl::string_view value) {
+  _internal_mutable_context_keys()->Mutable(index)->assign(value.data(),
+                                                     value.size());
+  // @@protoc_insertion_point(field_set_string_piece:oteldemo.AdRequest.context_keys)
+}
+inline void AdRequest::add_context_keys(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_context_keys()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add:oteldemo.AdRequest.context_keys)
+}
+inline void AdRequest::add_context_keys(std::string&& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_context_keys()->Add(std::move(value));
+  // @@protoc_insertion_point(field_add:oteldemo.AdRequest.context_keys)
+}
+inline void AdRequest::add_context_keys(const char* value) {
+  ABSL_DCHECK(value != nullptr);
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_context_keys()->Add()->assign(value);
+  // @@protoc_insertion_point(field_add_char:oteldemo.AdRequest.context_keys)
+}
+inline void AdRequest::add_context_keys(const char* value, std::size_t size) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_context_keys()->Add()->assign(
+      reinterpret_cast<const char*>(value), size);
+  // @@protoc_insertion_point(field_add_pointer:oteldemo.AdRequest.context_keys)
+}
+inline void AdRequest::add_context_keys(absl::string_view value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _internal_mutable_context_keys()->Add()->assign(value.data(), value.size());
+  // @@protoc_insertion_point(field_add_string_piece:oteldemo.AdRequest.context_keys)
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+AdRequest::context_keys() const {
+  // @@protoc_insertion_point(field_list:oteldemo.AdRequest.context_keys)
+  return _internal_context_keys();
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>* AdRequest::mutable_context_keys() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.AdRequest.context_keys)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_context_keys();
+}
+inline const ::google::protobuf::RepeatedPtrField<std::string>&
+AdRequest::_internal_context_keys() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.context_keys_;
+}
+inline ::google::protobuf::RepeatedPtrField<std::string>*
+AdRequest::_internal_mutable_context_keys() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.context_keys_;
+}
+
+// -------------------------------------------------------------------
+
+// AdResponse
+
+// repeated .oteldemo.Ad ads = 1;
+inline int AdResponse::_internal_ads_size() const {
+  return _internal_ads().size();
+}
+inline int AdResponse::ads_size() const {
+  return _internal_ads_size();
+}
+inline void AdResponse::clear_ads() {
+  _internal_mutable_ads()->Clear();
+}
+inline ::oteldemo::Ad* AdResponse::mutable_ads(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.AdResponse.ads)
+  return _internal_mutable_ads()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField< ::oteldemo::Ad >*
+AdResponse::mutable_ads() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.AdResponse.ads)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_ads();
+}
+inline const ::oteldemo::Ad& AdResponse::ads(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.AdResponse.ads)
+    return _internal_ads().Get(index);
+}
+inline ::oteldemo::Ad* AdResponse::add_ads() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::oteldemo::Ad* _add = _internal_mutable_ads()->Add();
+  // @@protoc_insertion_point(field_add:oteldemo.AdResponse.ads)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField< ::oteldemo::Ad >&
+AdResponse::ads() const {
+  // @@protoc_insertion_point(field_list:oteldemo.AdResponse.ads)
+  return _internal_ads();
+}
+inline const ::google::protobuf::RepeatedPtrField<::oteldemo::Ad>&
+AdResponse::_internal_ads() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.ads_;
+}
+inline ::google::protobuf::RepeatedPtrField<::oteldemo::Ad>*
+AdResponse::_internal_mutable_ads() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.ads_;
+}
+
+// -------------------------------------------------------------------
+
+// Ad
+
+// string redirect_url = 1;
+inline void Ad::clear_redirect_url() {
+  _impl_.redirect_url_.ClearToEmpty();
+}
+inline const std::string& Ad::redirect_url() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Ad.redirect_url)
+  return _internal_redirect_url();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Ad::set_redirect_url(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.redirect_url_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Ad.redirect_url)
+}
+inline std::string* Ad::mutable_redirect_url() {
+  std::string* _s = _internal_mutable_redirect_url();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Ad.redirect_url)
+  return _s;
+}
+inline const std::string& Ad::_internal_redirect_url() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.redirect_url_.Get();
+}
+inline void Ad::_internal_set_redirect_url(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.redirect_url_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Ad::_internal_mutable_redirect_url() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.redirect_url_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Ad::release_redirect_url() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Ad.redirect_url)
+  return _impl_.redirect_url_.Release();
+}
+inline void Ad::set_allocated_redirect_url(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.redirect_url_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.redirect_url_.IsDefault()) {
+          _impl_.redirect_url_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Ad.redirect_url)
+}
+
+// string text = 2;
+inline void Ad::clear_text() {
+  _impl_.text_.ClearToEmpty();
+}
+inline const std::string& Ad::text() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Ad.text)
+  return _internal_text();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Ad::set_text(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.text_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Ad.text)
+}
+inline std::string* Ad::mutable_text() {
+  std::string* _s = _internal_mutable_text();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Ad.text)
+  return _s;
+}
+inline const std::string& Ad::_internal_text() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.text_.Get();
+}
+inline void Ad::_internal_set_text(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.text_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Ad::_internal_mutable_text() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.text_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Ad::release_text() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Ad.text)
+  return _impl_.text_.Release();
+}
+inline void Ad::set_allocated_text(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.text_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.text_.IsDefault()) {
+          _impl_.text_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Ad.text)
+}
+
+// -------------------------------------------------------------------
+
+// Flag
+
+// string name = 1;
+inline void Flag::clear_name() {
+  _impl_.name_.ClearToEmpty();
+}
+inline const std::string& Flag::name() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Flag.name)
+  return _internal_name();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Flag::set_name(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Flag.name)
+}
+inline std::string* Flag::mutable_name() {
+  std::string* _s = _internal_mutable_name();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Flag.name)
+  return _s;
+}
+inline const std::string& Flag::_internal_name() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.name_.Get();
+}
+inline void Flag::_internal_set_name(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Flag::_internal_mutable_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.name_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Flag::release_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Flag.name)
+  return _impl_.name_.Release();
+}
+inline void Flag::set_allocated_name(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.name_.IsDefault()) {
+          _impl_.name_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Flag.name)
+}
+
+// string description = 2;
+inline void Flag::clear_description() {
+  _impl_.description_.ClearToEmpty();
+}
+inline const std::string& Flag::description() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Flag.description)
+  return _internal_description();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void Flag::set_description(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.description_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.Flag.description)
+}
+inline std::string* Flag::mutable_description() {
+  std::string* _s = _internal_mutable_description();
+  // @@protoc_insertion_point(field_mutable:oteldemo.Flag.description)
+  return _s;
+}
+inline const std::string& Flag::_internal_description() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.description_.Get();
+}
+inline void Flag::_internal_set_description(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.description_.Set(value, GetArenaForAllocation());
+}
+inline std::string* Flag::_internal_mutable_description() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.description_.Mutable( GetArenaForAllocation());
+}
+inline std::string* Flag::release_description() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.Flag.description)
+  return _impl_.description_.Release();
+}
+inline void Flag::set_allocated_description(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.description_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.description_.IsDefault()) {
+          _impl_.description_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.Flag.description)
+}
+
+// bool enabled = 3;
+inline void Flag::clear_enabled() {
+  _impl_.enabled_ = false;
+}
+inline bool Flag::enabled() const {
+  // @@protoc_insertion_point(field_get:oteldemo.Flag.enabled)
+  return _internal_enabled();
+}
+inline void Flag::set_enabled(bool value) {
+  _internal_set_enabled(value);
+  // @@protoc_insertion_point(field_set:oteldemo.Flag.enabled)
+}
+inline bool Flag::_internal_enabled() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.enabled_;
+}
+inline void Flag::_internal_set_enabled(bool value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.enabled_ = value;
+}
+
+// -------------------------------------------------------------------
+
+// GetFlagRequest
+
+// string name = 1;
+inline void GetFlagRequest::clear_name() {
+  _impl_.name_.ClearToEmpty();
+}
+inline const std::string& GetFlagRequest::name() const {
+  // @@protoc_insertion_point(field_get:oteldemo.GetFlagRequest.name)
+  return _internal_name();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void GetFlagRequest::set_name(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.GetFlagRequest.name)
+}
+inline std::string* GetFlagRequest::mutable_name() {
+  std::string* _s = _internal_mutable_name();
+  // @@protoc_insertion_point(field_mutable:oteldemo.GetFlagRequest.name)
+  return _s;
+}
+inline const std::string& GetFlagRequest::_internal_name() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.name_.Get();
+}
+inline void GetFlagRequest::_internal_set_name(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(value, GetArenaForAllocation());
+}
+inline std::string* GetFlagRequest::_internal_mutable_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.name_.Mutable( GetArenaForAllocation());
+}
+inline std::string* GetFlagRequest::release_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.GetFlagRequest.name)
+  return _impl_.name_.Release();
+}
+inline void GetFlagRequest::set_allocated_name(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.name_.IsDefault()) {
+          _impl_.name_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.GetFlagRequest.name)
+}
+
+// -------------------------------------------------------------------
+
+// GetFlagResponse
+
+// .oteldemo.Flag flag = 1;
+inline bool GetFlagResponse::has_flag() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.flag_ != nullptr);
+  return value;
+}
+inline void GetFlagResponse::clear_flag() {
+  if (_impl_.flag_ != nullptr) _impl_.flag_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Flag& GetFlagResponse::_internal_flag() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Flag* p = _impl_.flag_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Flag&>(::oteldemo::_Flag_default_instance_);
+}
+inline const ::oteldemo::Flag& GetFlagResponse::flag() const {
+  // @@protoc_insertion_point(field_get:oteldemo.GetFlagResponse.flag)
+  return _internal_flag();
+}
+inline void GetFlagResponse::unsafe_arena_set_allocated_flag(::oteldemo::Flag* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.flag_);
+  }
+  _impl_.flag_ = reinterpret_cast<::oteldemo::Flag*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.GetFlagResponse.flag)
+}
+inline ::oteldemo::Flag* GetFlagResponse::release_flag() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Flag* released = _impl_.flag_;
+  _impl_.flag_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Flag* GetFlagResponse::unsafe_arena_release_flag() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.GetFlagResponse.flag)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Flag* temp = _impl_.flag_;
+  _impl_.flag_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Flag* GetFlagResponse::_internal_mutable_flag() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.flag_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Flag>(GetArenaForAllocation());
+    _impl_.flag_ = reinterpret_cast<::oteldemo::Flag*>(p);
+  }
+  return _impl_.flag_;
+}
+inline ::oteldemo::Flag* GetFlagResponse::mutable_flag() {
+  ::oteldemo::Flag* _msg = _internal_mutable_flag();
+  // @@protoc_insertion_point(field_mutable:oteldemo.GetFlagResponse.flag)
+  return _msg;
+}
+inline void GetFlagResponse::set_allocated_flag(::oteldemo::Flag* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Flag*>(_impl_.flag_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Flag*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.flag_ = reinterpret_cast<::oteldemo::Flag*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.GetFlagResponse.flag)
+}
+
+// -------------------------------------------------------------------
+
+// CreateFlagRequest
+
+// string name = 1;
+inline void CreateFlagRequest::clear_name() {
+  _impl_.name_.ClearToEmpty();
+}
+inline const std::string& CreateFlagRequest::name() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CreateFlagRequest.name)
+  return _internal_name();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CreateFlagRequest::set_name(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.CreateFlagRequest.name)
+}
+inline std::string* CreateFlagRequest::mutable_name() {
+  std::string* _s = _internal_mutable_name();
+  // @@protoc_insertion_point(field_mutable:oteldemo.CreateFlagRequest.name)
+  return _s;
+}
+inline const std::string& CreateFlagRequest::_internal_name() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.name_.Get();
+}
+inline void CreateFlagRequest::_internal_set_name(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(value, GetArenaForAllocation());
+}
+inline std::string* CreateFlagRequest::_internal_mutable_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.name_.Mutable( GetArenaForAllocation());
+}
+inline std::string* CreateFlagRequest::release_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.CreateFlagRequest.name)
+  return _impl_.name_.Release();
+}
+inline void CreateFlagRequest::set_allocated_name(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.name_.IsDefault()) {
+          _impl_.name_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.CreateFlagRequest.name)
+}
+
+// string description = 2;
+inline void CreateFlagRequest::clear_description() {
+  _impl_.description_.ClearToEmpty();
+}
+inline const std::string& CreateFlagRequest::description() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CreateFlagRequest.description)
+  return _internal_description();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void CreateFlagRequest::set_description(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.description_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.CreateFlagRequest.description)
+}
+inline std::string* CreateFlagRequest::mutable_description() {
+  std::string* _s = _internal_mutable_description();
+  // @@protoc_insertion_point(field_mutable:oteldemo.CreateFlagRequest.description)
+  return _s;
+}
+inline const std::string& CreateFlagRequest::_internal_description() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.description_.Get();
+}
+inline void CreateFlagRequest::_internal_set_description(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.description_.Set(value, GetArenaForAllocation());
+}
+inline std::string* CreateFlagRequest::_internal_mutable_description() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.description_.Mutable( GetArenaForAllocation());
+}
+inline std::string* CreateFlagRequest::release_description() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.CreateFlagRequest.description)
+  return _impl_.description_.Release();
+}
+inline void CreateFlagRequest::set_allocated_description(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.description_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.description_.IsDefault()) {
+          _impl_.description_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.CreateFlagRequest.description)
+}
+
+// bool enabled = 3;
+inline void CreateFlagRequest::clear_enabled() {
+  _impl_.enabled_ = false;
+}
+inline bool CreateFlagRequest::enabled() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CreateFlagRequest.enabled)
+  return _internal_enabled();
+}
+inline void CreateFlagRequest::set_enabled(bool value) {
+  _internal_set_enabled(value);
+  // @@protoc_insertion_point(field_set:oteldemo.CreateFlagRequest.enabled)
+}
+inline bool CreateFlagRequest::_internal_enabled() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.enabled_;
+}
+inline void CreateFlagRequest::_internal_set_enabled(bool value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.enabled_ = value;
+}
+
+// -------------------------------------------------------------------
+
+// CreateFlagResponse
+
+// .oteldemo.Flag flag = 1;
+inline bool CreateFlagResponse::has_flag() const {
+  bool value = (_impl_._has_bits_[0] & 0x00000001u) != 0;
+  PROTOBUF_ASSUME(!value || _impl_.flag_ != nullptr);
+  return value;
+}
+inline void CreateFlagResponse::clear_flag() {
+  if (_impl_.flag_ != nullptr) _impl_.flag_->Clear();
+  _impl_._has_bits_[0] &= ~0x00000001u;
+}
+inline const ::oteldemo::Flag& CreateFlagResponse::_internal_flag() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  const ::oteldemo::Flag* p = _impl_.flag_;
+  return p != nullptr ? *p : reinterpret_cast<const ::oteldemo::Flag&>(::oteldemo::_Flag_default_instance_);
+}
+inline const ::oteldemo::Flag& CreateFlagResponse::flag() const {
+  // @@protoc_insertion_point(field_get:oteldemo.CreateFlagResponse.flag)
+  return _internal_flag();
+}
+inline void CreateFlagResponse::unsafe_arena_set_allocated_flag(::oteldemo::Flag* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (GetArenaForAllocation() == nullptr) {
+    delete reinterpret_cast<::google::protobuf::MessageLite*>(_impl_.flag_);
+  }
+  _impl_.flag_ = reinterpret_cast<::oteldemo::Flag*>(value);
+  if (value != nullptr) {
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:oteldemo.CreateFlagResponse.flag)
+}
+inline ::oteldemo::Flag* CreateFlagResponse::release_flag() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Flag* released = _impl_.flag_;
+  _impl_.flag_ = nullptr;
+#ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
+  auto* old = reinterpret_cast<::google::protobuf::MessageLite*>(released);
+  released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  if (GetArenaForAllocation() == nullptr) {
+    delete old;
+  }
+#else   // PROTOBUF_FORCE_COPY_IN_RELEASE
+  if (GetArenaForAllocation() != nullptr) {
+    released = ::google::protobuf::internal::DuplicateIfNonNull(released);
+  }
+#endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
+  return released;
+}
+inline ::oteldemo::Flag* CreateFlagResponse::unsafe_arena_release_flag() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.CreateFlagResponse.flag)
+
+  _impl_._has_bits_[0] &= ~0x00000001u;
+  ::oteldemo::Flag* temp = _impl_.flag_;
+  _impl_.flag_ = nullptr;
+  return temp;
+}
+inline ::oteldemo::Flag* CreateFlagResponse::_internal_mutable_flag() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_._has_bits_[0] |= 0x00000001u;
+  if (_impl_.flag_ == nullptr) {
+    auto* p = CreateMaybeMessage<::oteldemo::Flag>(GetArenaForAllocation());
+    _impl_.flag_ = reinterpret_cast<::oteldemo::Flag*>(p);
+  }
+  return _impl_.flag_;
+}
+inline ::oteldemo::Flag* CreateFlagResponse::mutable_flag() {
+  ::oteldemo::Flag* _msg = _internal_mutable_flag();
+  // @@protoc_insertion_point(field_mutable:oteldemo.CreateFlagResponse.flag)
+  return _msg;
+}
+inline void CreateFlagResponse::set_allocated_flag(::oteldemo::Flag* value) {
+  ::google::protobuf::Arena* message_arena = GetArenaForAllocation();
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  if (message_arena == nullptr) {
+    delete reinterpret_cast<::oteldemo::Flag*>(_impl_.flag_);
+  }
+
+  if (value != nullptr) {
+    ::google::protobuf::Arena* submessage_arena =
+        ::google::protobuf::Arena::InternalGetOwningArena(reinterpret_cast<::oteldemo::Flag*>(value));
+    if (message_arena != submessage_arena) {
+      value = ::google::protobuf::internal::GetOwnedMessage(message_arena, value, submessage_arena);
+    }
+    _impl_._has_bits_[0] |= 0x00000001u;
+  } else {
+    _impl_._has_bits_[0] &= ~0x00000001u;
+  }
+
+  _impl_.flag_ = reinterpret_cast<::oteldemo::Flag*>(value);
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.CreateFlagResponse.flag)
+}
+
+// -------------------------------------------------------------------
+
+// UpdateFlagRequest
+
+// string name = 1;
+inline void UpdateFlagRequest::clear_name() {
+  _impl_.name_.ClearToEmpty();
+}
+inline const std::string& UpdateFlagRequest::name() const {
+  // @@protoc_insertion_point(field_get:oteldemo.UpdateFlagRequest.name)
+  return _internal_name();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void UpdateFlagRequest::set_name(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.UpdateFlagRequest.name)
+}
+inline std::string* UpdateFlagRequest::mutable_name() {
+  std::string* _s = _internal_mutable_name();
+  // @@protoc_insertion_point(field_mutable:oteldemo.UpdateFlagRequest.name)
+  return _s;
+}
+inline const std::string& UpdateFlagRequest::_internal_name() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.name_.Get();
+}
+inline void UpdateFlagRequest::_internal_set_name(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(value, GetArenaForAllocation());
+}
+inline std::string* UpdateFlagRequest::_internal_mutable_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.name_.Mutable( GetArenaForAllocation());
+}
+inline std::string* UpdateFlagRequest::release_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.UpdateFlagRequest.name)
+  return _impl_.name_.Release();
+}
+inline void UpdateFlagRequest::set_allocated_name(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.name_.IsDefault()) {
+          _impl_.name_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.UpdateFlagRequest.name)
+}
+
+// bool enabled = 2;
+inline void UpdateFlagRequest::clear_enabled() {
+  _impl_.enabled_ = false;
+}
+inline bool UpdateFlagRequest::enabled() const {
+  // @@protoc_insertion_point(field_get:oteldemo.UpdateFlagRequest.enabled)
+  return _internal_enabled();
+}
+inline void UpdateFlagRequest::set_enabled(bool value) {
+  _internal_set_enabled(value);
+  // @@protoc_insertion_point(field_set:oteldemo.UpdateFlagRequest.enabled)
+}
+inline bool UpdateFlagRequest::_internal_enabled() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.enabled_;
+}
+inline void UpdateFlagRequest::_internal_set_enabled(bool value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.enabled_ = value;
+}
+
+// -------------------------------------------------------------------
+
+// UpdateFlagResponse
+
+// -------------------------------------------------------------------
+
+// ListFlagsRequest
+
+// -------------------------------------------------------------------
+
+// ListFlagsResponse
+
+// repeated .oteldemo.Flag flag = 1;
+inline int ListFlagsResponse::_internal_flag_size() const {
+  return _internal_flag().size();
+}
+inline int ListFlagsResponse::flag_size() const {
+  return _internal_flag_size();
+}
+inline void ListFlagsResponse::clear_flag() {
+  _internal_mutable_flag()->Clear();
+}
+inline ::oteldemo::Flag* ListFlagsResponse::mutable_flag(int index) {
+  // @@protoc_insertion_point(field_mutable:oteldemo.ListFlagsResponse.flag)
+  return _internal_mutable_flag()->Mutable(index);
+}
+inline ::google::protobuf::RepeatedPtrField< ::oteldemo::Flag >*
+ListFlagsResponse::mutable_flag() {
+  // @@protoc_insertion_point(field_mutable_list:oteldemo.ListFlagsResponse.flag)
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  return _internal_mutable_flag();
+}
+inline const ::oteldemo::Flag& ListFlagsResponse::flag(int index) const {
+  // @@protoc_insertion_point(field_get:oteldemo.ListFlagsResponse.flag)
+    return _internal_flag().Get(index);
+}
+inline ::oteldemo::Flag* ListFlagsResponse::add_flag() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ::oteldemo::Flag* _add = _internal_mutable_flag()->Add();
+  // @@protoc_insertion_point(field_add:oteldemo.ListFlagsResponse.flag)
+  return _add;
+}
+inline const ::google::protobuf::RepeatedPtrField< ::oteldemo::Flag >&
+ListFlagsResponse::flag() const {
+  // @@protoc_insertion_point(field_list:oteldemo.ListFlagsResponse.flag)
+  return _internal_flag();
+}
+inline const ::google::protobuf::RepeatedPtrField<::oteldemo::Flag>&
+ListFlagsResponse::_internal_flag() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.flag_;
+}
+inline ::google::protobuf::RepeatedPtrField<::oteldemo::Flag>*
+ListFlagsResponse::_internal_mutable_flag() {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return &_impl_.flag_;
+}
+
+// -------------------------------------------------------------------
+
+// DeleteFlagRequest
+
+// string name = 1;
+inline void DeleteFlagRequest::clear_name() {
+  _impl_.name_.ClearToEmpty();
+}
+inline const std::string& DeleteFlagRequest::name() const {
+  // @@protoc_insertion_point(field_get:oteldemo.DeleteFlagRequest.name)
+  return _internal_name();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void DeleteFlagRequest::set_name(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:oteldemo.DeleteFlagRequest.name)
+}
+inline std::string* DeleteFlagRequest::mutable_name() {
+  std::string* _s = _internal_mutable_name();
+  // @@protoc_insertion_point(field_mutable:oteldemo.DeleteFlagRequest.name)
+  return _s;
+}
+inline const std::string& DeleteFlagRequest::_internal_name() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.name_.Get();
+}
+inline void DeleteFlagRequest::_internal_set_name(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.name_.Set(value, GetArenaForAllocation());
+}
+inline std::string* DeleteFlagRequest::_internal_mutable_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.name_.Mutable( GetArenaForAllocation());
+}
+inline std::string* DeleteFlagRequest::release_name() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:oteldemo.DeleteFlagRequest.name)
+  return _impl_.name_.Release();
+}
+inline void DeleteFlagRequest::set_allocated_name(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.name_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.name_.IsDefault()) {
+          _impl_.name_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:oteldemo.DeleteFlagRequest.name)
+}
+
+// -------------------------------------------------------------------
+
+// DeleteFlagResponse
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif  // __GNUC__
+
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace oteldemo
+
+
+// @@protoc_insertion_point(global_scope)
+
+#include "google/protobuf/port_undef.inc"
+
+#endif  // GOOGLE_PROTOBUF_INCLUDED_demo_2eproto_2epb_2eh
diff --git a/src/currency/build/generated/proto/demo_mock.grpc.pb.h b/src/currency/build/generated/proto/demo_mock.grpc.pb.h
new file mode 100644
index 0000000..e56b23f
--- /dev/null
+++ b/src/currency/build/generated/proto/demo_mock.grpc.pb.h
@@ -0,0 +1,119 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: demo.proto
+
+#ifndef GRPC_MOCK_demo_2eproto__INCLUDED
+#define GRPC_MOCK_demo_2eproto__INCLUDED
+
+#include "demo.pb.h"
+#include "demo.grpc.pb.h"
+
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/sync_stream.h>
+#include <gmock/gmock.h>
+namespace oteldemo {
+
+class MockCartServiceStub : public CartService::StubInterface {
+ public:
+  MOCK_METHOD3(AddItem, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::oteldemo::Empty* response));
+  MOCK_METHOD3(AsyncAddItemRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>*(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncAddItemRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>*(::grpc::ClientContext* context, const ::oteldemo::AddItemRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(GetCart, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::oteldemo::Cart* response));
+  MOCK_METHOD3(AsyncGetCartRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Cart>*(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncGetCartRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Cart>*(::grpc::ClientContext* context, const ::oteldemo::GetCartRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(EmptyCart, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::oteldemo::Empty* response));
+  MOCK_METHOD3(AsyncEmptyCartRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>*(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncEmptyCartRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>*(::grpc::ClientContext* context, const ::oteldemo::EmptyCartRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+class MockRecommendationServiceStub : public RecommendationService::StubInterface {
+ public:
+  MOCK_METHOD3(ListRecommendations, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::oteldemo::ListRecommendationsResponse* response));
+  MOCK_METHOD3(AsyncListRecommendationsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListRecommendationsResponse>*(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncListRecommendationsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListRecommendationsResponse>*(::grpc::ClientContext* context, const ::oteldemo::ListRecommendationsRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+class MockProductCatalogServiceStub : public ProductCatalogService::StubInterface {
+ public:
+  MOCK_METHOD3(ListProducts, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::oteldemo::ListProductsResponse* response));
+  MOCK_METHOD3(AsyncListProductsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListProductsResponse>*(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncListProductsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListProductsResponse>*(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(GetProduct, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::oteldemo::Product* response));
+  MOCK_METHOD3(AsyncGetProductRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Product>*(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncGetProductRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Product>*(::grpc::ClientContext* context, const ::oteldemo::GetProductRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(SearchProducts, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::oteldemo::SearchProductsResponse* response));
+  MOCK_METHOD3(AsyncSearchProductsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::SearchProductsResponse>*(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncSearchProductsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::SearchProductsResponse>*(::grpc::ClientContext* context, const ::oteldemo::SearchProductsRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+class MockShippingServiceStub : public ShippingService::StubInterface {
+ public:
+  MOCK_METHOD3(GetQuote, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::oteldemo::GetQuoteResponse* response));
+  MOCK_METHOD3(AsyncGetQuoteRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetQuoteResponse>*(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncGetQuoteRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetQuoteResponse>*(::grpc::ClientContext* context, const ::oteldemo::GetQuoteRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(ShipOrder, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::oteldemo::ShipOrderResponse* response));
+  MOCK_METHOD3(AsyncShipOrderRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ShipOrderResponse>*(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncShipOrderRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ShipOrderResponse>*(::grpc::ClientContext* context, const ::oteldemo::ShipOrderRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+class MockCurrencyServiceStub : public CurrencyService::StubInterface {
+ public:
+  MOCK_METHOD3(GetSupportedCurrencies, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::oteldemo::GetSupportedCurrenciesResponse* response));
+  MOCK_METHOD3(AsyncGetSupportedCurrenciesRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetSupportedCurrenciesResponse>*(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncGetSupportedCurrenciesRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetSupportedCurrenciesResponse>*(::grpc::ClientContext* context, const ::oteldemo::Empty& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(Convert, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::oteldemo::Money* response));
+  MOCK_METHOD3(AsyncConvertRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Money>*(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncConvertRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Money>*(::grpc::ClientContext* context, const ::oteldemo::CurrencyConversionRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+class MockPaymentServiceStub : public PaymentService::StubInterface {
+ public:
+  MOCK_METHOD3(Charge, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::oteldemo::ChargeResponse* response));
+  MOCK_METHOD3(AsyncChargeRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ChargeResponse>*(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncChargeRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ChargeResponse>*(::grpc::ClientContext* context, const ::oteldemo::ChargeRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+class MockEmailServiceStub : public EmailService::StubInterface {
+ public:
+  MOCK_METHOD3(SendOrderConfirmation, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::oteldemo::Empty* response));
+  MOCK_METHOD3(AsyncSendOrderConfirmationRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>*(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncSendOrderConfirmationRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::Empty>*(::grpc::ClientContext* context, const ::oteldemo::SendOrderConfirmationRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+class MockCheckoutServiceStub : public CheckoutService::StubInterface {
+ public:
+  MOCK_METHOD3(PlaceOrder, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::oteldemo::PlaceOrderResponse* response));
+  MOCK_METHOD3(AsyncPlaceOrderRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::PlaceOrderResponse>*(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncPlaceOrderRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::PlaceOrderResponse>*(::grpc::ClientContext* context, const ::oteldemo::PlaceOrderRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+class MockAdServiceStub : public AdService::StubInterface {
+ public:
+  MOCK_METHOD3(GetAds, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::oteldemo::AdResponse* response));
+  MOCK_METHOD3(AsyncGetAdsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::AdResponse>*(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncGetAdsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::AdResponse>*(::grpc::ClientContext* context, const ::oteldemo::AdRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+class MockFeatureFlagServiceStub : public FeatureFlagService::StubInterface {
+ public:
+  MOCK_METHOD3(GetFlag, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::oteldemo::GetFlagResponse* response));
+  MOCK_METHOD3(AsyncGetFlagRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetFlagResponse>*(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncGetFlagRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::GetFlagResponse>*(::grpc::ClientContext* context, const ::oteldemo::GetFlagRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(CreateFlag, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::oteldemo::CreateFlagResponse* response));
+  MOCK_METHOD3(AsyncCreateFlagRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::CreateFlagResponse>*(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncCreateFlagRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::CreateFlagResponse>*(::grpc::ClientContext* context, const ::oteldemo::CreateFlagRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(UpdateFlag, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::oteldemo::UpdateFlagResponse* response));
+  MOCK_METHOD3(AsyncUpdateFlagRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::UpdateFlagResponse>*(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncUpdateFlagRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::UpdateFlagResponse>*(::grpc::ClientContext* context, const ::oteldemo::UpdateFlagRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(ListFlags, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::oteldemo::ListFlagsResponse* response));
+  MOCK_METHOD3(AsyncListFlagsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListFlagsResponse>*(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncListFlagsRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::ListFlagsResponse>*(::grpc::ClientContext* context, const ::oteldemo::ListFlagsRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(DeleteFlag, ::grpc::Status(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::oteldemo::DeleteFlagResponse* response));
+  MOCK_METHOD3(AsyncDeleteFlagRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::DeleteFlagResponse>*(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncDeleteFlagRaw, ::grpc::ClientAsyncResponseReaderInterface< ::oteldemo::DeleteFlagResponse>*(::grpc::ClientContext* context, const ::oteldemo::DeleteFlagRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+}  // namespace oteldemo
+
+
+#endif  // GRPC_MOCK_demo_2eproto__INCLUDED
diff --git a/src/currency/build/generated/proto/grpc/health/v1/health.grpc.pb.cc b/src/currency/build/generated/proto/grpc/health/v1/health.grpc.pb.cc
new file mode 100644
index 0000000..18b8401
--- /dev/null
+++ b/src/currency/build/generated/proto/grpc/health/v1/health.grpc.pb.cc
@@ -0,0 +1,90 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: grpc/health/v1/health.proto
+
+#include "grpc/health/v1/health.pb.h"
+#include "grpc/health/v1/health.grpc.pb.h"
+
+#include <functional>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/impl/channel_interface.h>
+#include <grpcpp/impl/client_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/support/sync_stream.h>
+namespace grpc {
+namespace health {
+namespace v1 {
+
+static const char* Health_method_names[] = {
+  "/grpc.health.v1.Health/Check",
+};
+
+std::unique_ptr< Health::Stub> Health::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {
+  (void)options;
+  std::unique_ptr< Health::Stub> stub(new Health::Stub(channel, options));
+  return stub;
+}
+
+Health::Stub::Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options)
+  : channel_(channel), rpcmethod_Check_(Health_method_names[0], options.suffix_for_stats(),::grpc::internal::RpcMethod::NORMAL_RPC, channel)
+  {}
+
+::grpc::Status Health::Stub::Check(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::health::v1::HealthCheckResponse* response) {
+  return ::grpc::internal::BlockingUnaryCall< ::grpc::health::v1::HealthCheckRequest, ::grpc::health::v1::HealthCheckResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), rpcmethod_Check_, context, request, response);
+}
+
+void Health::Stub::async::Check(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest* request, ::grpc::health::v1::HealthCheckResponse* response, std::function<void(::grpc::Status)> f) {
+  ::grpc::internal::CallbackUnaryCall< ::grpc::health::v1::HealthCheckRequest, ::grpc::health::v1::HealthCheckResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_Check_, context, request, response, std::move(f));
+}
+
+void Health::Stub::async::Check(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest* request, ::grpc::health::v1::HealthCheckResponse* response, ::grpc::ClientUnaryReactor* reactor) {
+  ::grpc::internal::ClientCallbackUnaryFactory::Create< ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(stub_->channel_.get(), stub_->rpcmethod_Check_, context, request, response, reactor);
+}
+
+::grpc::ClientAsyncResponseReader< ::grpc::health::v1::HealthCheckResponse>* Health::Stub::PrepareAsyncCheckRaw(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) {
+  return ::grpc::internal::ClientAsyncResponseReaderHelper::Create< ::grpc::health::v1::HealthCheckResponse, ::grpc::health::v1::HealthCheckRequest, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(channel_.get(), cq, rpcmethod_Check_, context, request);
+}
+
+::grpc::ClientAsyncResponseReader< ::grpc::health::v1::HealthCheckResponse>* Health::Stub::AsyncCheckRaw(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) {
+  auto* result =
+    this->PrepareAsyncCheckRaw(context, request, cq);
+  result->StartCall();
+  return result;
+}
+
+Health::Service::Service() {
+  AddMethod(new ::grpc::internal::RpcServiceMethod(
+      Health_method_names[0],
+      ::grpc::internal::RpcMethod::NORMAL_RPC,
+      new ::grpc::internal::RpcMethodHandler< Health::Service, ::grpc::health::v1::HealthCheckRequest, ::grpc::health::v1::HealthCheckResponse, ::grpc::protobuf::MessageLite, ::grpc::protobuf::MessageLite>(
+          [](Health::Service* service,
+             ::grpc::ServerContext* ctx,
+             const ::grpc::health::v1::HealthCheckRequest* req,
+             ::grpc::health::v1::HealthCheckResponse* resp) {
+               return service->Check(ctx, req, resp);
+             }, this)));
+}
+
+Health::Service::~Service() {
+}
+
+::grpc::Status Health::Service::Check(::grpc::ServerContext* context, const ::grpc::health::v1::HealthCheckRequest* request, ::grpc::health::v1::HealthCheckResponse* response) {
+  (void) context;
+  (void) request;
+  (void) response;
+  return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+}
+
+
+}  // namespace grpc
+}  // namespace health
+}  // namespace v1
+
diff --git a/src/currency/build/generated/proto/grpc/health/v1/health.grpc.pb.h b/src/currency/build/generated/proto/grpc/health/v1/health.grpc.pb.h
new file mode 100644
index 0000000..8303925
--- /dev/null
+++ b/src/currency/build/generated/proto/grpc/health/v1/health.grpc.pb.h
@@ -0,0 +1,262 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: grpc/health/v1/health.proto
+// Original file comments:
+// Copyright 2015 The gRPC Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// The canonical version of this proto can be found at
+// https://github.com/grpc/grpc-proto/blob/master/grpc/health/v1/health.proto
+//
+#ifndef GRPC_grpc_2fhealth_2fv1_2fhealth_2eproto__INCLUDED
+#define GRPC_grpc_2fhealth_2fv1_2fhealth_2eproto__INCLUDED
+
+#include "grpc/health/v1/health.pb.h"
+
+#include <functional>
+#include <grpcpp/generic/async_generic_service.h>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/proto_utils.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/support/status.h>
+#include <grpcpp/support/stub_options.h>
+#include <grpcpp/support/sync_stream.h>
+
+namespace grpc {
+namespace health {
+namespace v1 {
+
+class Health final {
+ public:
+  static constexpr char const* service_full_name() {
+    return "grpc.health.v1.Health";
+  }
+  class StubInterface {
+   public:
+    virtual ~StubInterface() {}
+    virtual ::grpc::Status Check(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::health::v1::HealthCheckResponse* response) = 0;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::health::v1::HealthCheckResponse>> AsyncCheck(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::health::v1::HealthCheckResponse>>(AsyncCheckRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::health::v1::HealthCheckResponse>> PrepareAsyncCheck(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReaderInterface< ::grpc::health::v1::HealthCheckResponse>>(PrepareAsyncCheckRaw(context, request, cq));
+    }
+    class async_interface {
+     public:
+      virtual ~async_interface() {}
+      virtual void Check(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest* request, ::grpc::health::v1::HealthCheckResponse* response, std::function<void(::grpc::Status)>) = 0;
+      virtual void Check(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest* request, ::grpc::health::v1::HealthCheckResponse* response, ::grpc::ClientUnaryReactor* reactor) = 0;
+    };
+    typedef class async_interface experimental_async_interface;
+    virtual class async_interface* async() { return nullptr; }
+    class async_interface* experimental_async() { return async(); }
+   private:
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::grpc::health::v1::HealthCheckResponse>* AsyncCheckRaw(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) = 0;
+    virtual ::grpc::ClientAsyncResponseReaderInterface< ::grpc::health::v1::HealthCheckResponse>* PrepareAsyncCheckRaw(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) = 0;
+  };
+  class Stub final : public StubInterface {
+   public:
+    Stub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+    ::grpc::Status Check(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::health::v1::HealthCheckResponse* response) override;
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::health::v1::HealthCheckResponse>> AsyncCheck(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::health::v1::HealthCheckResponse>>(AsyncCheckRaw(context, request, cq));
+    }
+    std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::health::v1::HealthCheckResponse>> PrepareAsyncCheck(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) {
+      return std::unique_ptr< ::grpc::ClientAsyncResponseReader< ::grpc::health::v1::HealthCheckResponse>>(PrepareAsyncCheckRaw(context, request, cq));
+    }
+    class async final :
+      public StubInterface::async_interface {
+     public:
+      void Check(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest* request, ::grpc::health::v1::HealthCheckResponse* response, std::function<void(::grpc::Status)>) override;
+      void Check(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest* request, ::grpc::health::v1::HealthCheckResponse* response, ::grpc::ClientUnaryReactor* reactor) override;
+     private:
+      friend class Stub;
+      explicit async(Stub* stub): stub_(stub) { }
+      Stub* stub() { return stub_; }
+      Stub* stub_;
+    };
+    class async* async() override { return &async_stub_; }
+
+   private:
+    std::shared_ptr< ::grpc::ChannelInterface> channel_;
+    class async async_stub_{this};
+    ::grpc::ClientAsyncResponseReader< ::grpc::health::v1::HealthCheckResponse>* AsyncCheckRaw(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) override;
+    ::grpc::ClientAsyncResponseReader< ::grpc::health::v1::HealthCheckResponse>* PrepareAsyncCheckRaw(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq) override;
+    const ::grpc::internal::RpcMethod rpcmethod_Check_;
+  };
+  static std::unique_ptr<Stub> NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options = ::grpc::StubOptions());
+
+  class Service : public ::grpc::Service {
+   public:
+    Service();
+    virtual ~Service();
+    virtual ::grpc::Status Check(::grpc::ServerContext* context, const ::grpc::health::v1::HealthCheckRequest* request, ::grpc::health::v1::HealthCheckResponse* response);
+  };
+  template <class BaseClass>
+  class WithAsyncMethod_Check : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithAsyncMethod_Check() {
+      ::grpc::Service::MarkMethodAsync(0);
+    }
+    ~WithAsyncMethod_Check() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Check(::grpc::ServerContext* /*context*/, const ::grpc::health::v1::HealthCheckRequest* /*request*/, ::grpc::health::v1::HealthCheckResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestCheck(::grpc::ServerContext* context, ::grpc::health::v1::HealthCheckRequest* request, ::grpc::ServerAsyncResponseWriter< ::grpc::health::v1::HealthCheckResponse>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  typedef WithAsyncMethod_Check<Service > AsyncService;
+  template <class BaseClass>
+  class WithCallbackMethod_Check : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithCallbackMethod_Check() {
+      ::grpc::Service::MarkMethodCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::health::v1::HealthCheckRequest, ::grpc::health::v1::HealthCheckResponse>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::health::v1::HealthCheckRequest* request, ::grpc::health::v1::HealthCheckResponse* response) { return this->Check(context, request, response); }));}
+    void SetMessageAllocatorFor_Check(
+        ::grpc::MessageAllocator< ::grpc::health::v1::HealthCheckRequest, ::grpc::health::v1::HealthCheckResponse>* allocator) {
+      ::grpc::internal::MethodHandler* const handler = ::grpc::Service::GetHandler(0);
+      static_cast<::grpc::internal::CallbackUnaryHandler< ::grpc::health::v1::HealthCheckRequest, ::grpc::health::v1::HealthCheckResponse>*>(handler)
+              ->SetMessageAllocator(allocator);
+    }
+    ~WithCallbackMethod_Check() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Check(::grpc::ServerContext* /*context*/, const ::grpc::health::v1::HealthCheckRequest* /*request*/, ::grpc::health::v1::HealthCheckResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* Check(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::health::v1::HealthCheckRequest* /*request*/, ::grpc::health::v1::HealthCheckResponse* /*response*/)  { return nullptr; }
+  };
+  typedef WithCallbackMethod_Check<Service > CallbackService;
+  typedef CallbackService ExperimentalCallbackService;
+  template <class BaseClass>
+  class WithGenericMethod_Check : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithGenericMethod_Check() {
+      ::grpc::Service::MarkMethodGeneric(0);
+    }
+    ~WithGenericMethod_Check() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Check(::grpc::ServerContext* /*context*/, const ::grpc::health::v1::HealthCheckRequest* /*request*/, ::grpc::health::v1::HealthCheckResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+  };
+  template <class BaseClass>
+  class WithRawMethod_Check : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawMethod_Check() {
+      ::grpc::Service::MarkMethodRaw(0);
+    }
+    ~WithRawMethod_Check() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Check(::grpc::ServerContext* /*context*/, const ::grpc::health::v1::HealthCheckRequest* /*request*/, ::grpc::health::v1::HealthCheckResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    void RequestCheck(::grpc::ServerContext* context, ::grpc::ByteBuffer* request, ::grpc::ServerAsyncResponseWriter< ::grpc::ByteBuffer>* response, ::grpc::CompletionQueue* new_call_cq, ::grpc::ServerCompletionQueue* notification_cq, void *tag) {
+      ::grpc::Service::RequestAsyncUnary(0, context, request, response, new_call_cq, notification_cq, tag);
+    }
+  };
+  template <class BaseClass>
+  class WithRawCallbackMethod_Check : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithRawCallbackMethod_Check() {
+      ::grpc::Service::MarkMethodRawCallback(0,
+          new ::grpc::internal::CallbackUnaryHandler< ::grpc::ByteBuffer, ::grpc::ByteBuffer>(
+            [this](
+                   ::grpc::CallbackServerContext* context, const ::grpc::ByteBuffer* request, ::grpc::ByteBuffer* response) { return this->Check(context, request, response); }));
+    }
+    ~WithRawCallbackMethod_Check() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable synchronous version of this method
+    ::grpc::Status Check(::grpc::ServerContext* /*context*/, const ::grpc::health::v1::HealthCheckRequest* /*request*/, ::grpc::health::v1::HealthCheckResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    virtual ::grpc::ServerUnaryReactor* Check(
+      ::grpc::CallbackServerContext* /*context*/, const ::grpc::ByteBuffer* /*request*/, ::grpc::ByteBuffer* /*response*/)  { return nullptr; }
+  };
+  template <class BaseClass>
+  class WithStreamedUnaryMethod_Check : public BaseClass {
+   private:
+    void BaseClassMustBeDerivedFromService(const Service* /*service*/) {}
+   public:
+    WithStreamedUnaryMethod_Check() {
+      ::grpc::Service::MarkMethodStreamed(0,
+        new ::grpc::internal::StreamedUnaryHandler<
+          ::grpc::health::v1::HealthCheckRequest, ::grpc::health::v1::HealthCheckResponse>(
+            [this](::grpc::ServerContext* context,
+                   ::grpc::ServerUnaryStreamer<
+                     ::grpc::health::v1::HealthCheckRequest, ::grpc::health::v1::HealthCheckResponse>* streamer) {
+                       return this->StreamedCheck(context,
+                         streamer);
+                  }));
+    }
+    ~WithStreamedUnaryMethod_Check() override {
+      BaseClassMustBeDerivedFromService(this);
+    }
+    // disable regular version of this method
+    ::grpc::Status Check(::grpc::ServerContext* /*context*/, const ::grpc::health::v1::HealthCheckRequest* /*request*/, ::grpc::health::v1::HealthCheckResponse* /*response*/) override {
+      abort();
+      return ::grpc::Status(::grpc::StatusCode::UNIMPLEMENTED, "");
+    }
+    // replace default version of method with streamed unary
+    virtual ::grpc::Status StreamedCheck(::grpc::ServerContext* context, ::grpc::ServerUnaryStreamer< ::grpc::health::v1::HealthCheckRequest,::grpc::health::v1::HealthCheckResponse>* server_unary_streamer) = 0;
+  };
+  typedef WithStreamedUnaryMethod_Check<Service > StreamedUnaryService;
+  typedef Service SplitStreamedService;
+  typedef WithStreamedUnaryMethod_Check<Service > StreamedService;
+};
+
+}  // namespace v1
+}  // namespace health
+}  // namespace grpc
+
+
+#endif  // GRPC_grpc_2fhealth_2fv1_2fhealth_2eproto__INCLUDED
diff --git a/src/currency/build/generated/proto/grpc/health/v1/health.pb.cc b/src/currency/build/generated/proto/grpc/health/v1/health.pb.cc
new file mode 100644
index 0000000..4eb11be
--- /dev/null
+++ b/src/currency/build/generated/proto/grpc/health/v1/health.pb.cc
@@ -0,0 +1,544 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: grpc/health/v1/health.proto
+
+#include "grpc/health/v1/health.pb.h"
+
+#include <algorithm>
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/extension_set.h"
+#include "google/protobuf/wire_format_lite.h"
+#include "google/protobuf/descriptor.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/reflection_ops.h"
+#include "google/protobuf/wire_format.h"
+#include "google/protobuf/generated_message_tctable_impl.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+PROTOBUF_PRAGMA_INIT_SEG
+namespace _pb = ::google::protobuf;
+namespace _pbi = ::google::protobuf::internal;
+namespace _fl = ::google::protobuf::internal::field_layout;
+namespace grpc {
+namespace health {
+namespace v1 {
+        template <typename>
+PROTOBUF_CONSTEXPR HealthCheckRequest::HealthCheckRequest(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.service_)*/ {
+          &::_pbi::fixed_address_empty_string,
+          ::_pbi::ConstantInitialized{},
+      },
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct HealthCheckRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR HealthCheckRequestDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~HealthCheckRequestDefaultTypeInternal() {}
+  union {
+    HealthCheckRequest _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 HealthCheckRequestDefaultTypeInternal _HealthCheckRequest_default_instance_;
+        template <typename>
+PROTOBUF_CONSTEXPR HealthCheckResponse::HealthCheckResponse(::_pbi::ConstantInitialized)
+    : _impl_{
+      /*decltype(_impl_.status_)*/ 0,
+      /*decltype(_impl_._cached_size_)*/ {},
+    } {}
+struct HealthCheckResponseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR HealthCheckResponseDefaultTypeInternal() : _instance(::_pbi::ConstantInitialized{}) {}
+  ~HealthCheckResponseDefaultTypeInternal() {}
+  union {
+    HealthCheckResponse _instance;
+  };
+};
+
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
+    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 HealthCheckResponseDefaultTypeInternal _HealthCheckResponse_default_instance_;
+}  // namespace v1
+}  // namespace health
+}  // namespace grpc
+static ::_pb::Metadata file_level_metadata_grpc_2fhealth_2fv1_2fhealth_2eproto[2];
+static const ::_pb::EnumDescriptor* file_level_enum_descriptors_grpc_2fhealth_2fv1_2fhealth_2eproto[1];
+static constexpr const ::_pb::ServiceDescriptor**
+    file_level_service_descriptors_grpc_2fhealth_2fv1_2fhealth_2eproto = nullptr;
+const ::uint32_t TableStruct_grpc_2fhealth_2fv1_2fhealth_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(
+    protodesc_cold) = {
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::grpc::health::v1::HealthCheckRequest, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::grpc::health::v1::HealthCheckRequest, _impl_.service_),
+    ~0u,  // no _has_bits_
+    PROTOBUF_FIELD_OFFSET(::grpc::health::v1::HealthCheckResponse, _internal_metadata_),
+    ~0u,  // no _extensions_
+    ~0u,  // no _oneof_case_
+    ~0u,  // no _weak_field_map_
+    ~0u,  // no _inlined_string_donated_
+    ~0u,  // no _split_
+    ~0u,  // no sizeof(Split)
+    PROTOBUF_FIELD_OFFSET(::grpc::health::v1::HealthCheckResponse, _impl_.status_),
+};
+
+static const ::_pbi::MigrationSchema
+    schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+        {0, -1, -1, sizeof(::grpc::health::v1::HealthCheckRequest)},
+        {9, -1, -1, sizeof(::grpc::health::v1::HealthCheckResponse)},
+};
+
+static const ::_pb::Message* const file_default_instances[] = {
+    &::grpc::health::v1::_HealthCheckRequest_default_instance_._instance,
+    &::grpc::health::v1::_HealthCheckResponse_default_instance_._instance,
+};
+const char descriptor_table_protodef_grpc_2fhealth_2fv1_2fhealth_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
+    "\n\033grpc/health/v1/health.proto\022\016grpc.heal"
+    "th.v1\"%\n\022HealthCheckRequest\022\017\n\007service\030\001"
+    " \001(\t\"\224\001\n\023HealthCheckResponse\022A\n\006status\030\001"
+    " \001(\01621.grpc.health.v1.HealthCheckRespons"
+    "e.ServingStatus\":\n\rServingStatus\022\013\n\007UNKN"
+    "OWN\020\000\022\013\n\007SERVING\020\001\022\017\n\013NOT_SERVING\020\0022Z\n\006H"
+    "ealth\022P\n\005Check\022\".grpc.health.v1.HealthCh"
+    "eckRequest\032#.grpc.health.v1.HealthCheckR"
+    "esponseBa\n\021io.grpc.health.v1B\013HealthProt"
+    "oP\001Z,google.golang.org/grpc/health/grpc_"
+    "health_v1\252\002\016Grpc.Health.V1b\006proto3"
+};
+static ::absl::once_flag descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto_once;
+const ::_pbi::DescriptorTable descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto = {
+    false,
+    false,
+    434,
+    descriptor_table_protodef_grpc_2fhealth_2fv1_2fhealth_2eproto,
+    "grpc/health/v1/health.proto",
+    &descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto_once,
+    nullptr,
+    0,
+    2,
+    schemas,
+    file_default_instances,
+    TableStruct_grpc_2fhealth_2fv1_2fhealth_2eproto::offsets,
+    file_level_metadata_grpc_2fhealth_2fv1_2fhealth_2eproto,
+    file_level_enum_descriptors_grpc_2fhealth_2fv1_2fhealth_2eproto,
+    file_level_service_descriptors_grpc_2fhealth_2fv1_2fhealth_2eproto,
+};
+
+// This function exists to be marked as weak.
+// It can significantly speed up compilation by breaking up LLVM's SCC
+// in the .pb.cc translation units. Large translation units see a
+// reduction of more than 35% of walltime for optimized builds. Without
+// the weak attribute all the messages in the file, including all the
+// vtables and everything they use become part of the same SCC through
+// a cycle like:
+// GetMetadata -> descriptor table -> default instances ->
+//   vtables -> GetMetadata
+// By adding a weak function here we break the connection from the
+// individual vtables back into the descriptor table.
+PROTOBUF_ATTRIBUTE_WEAK const ::_pbi::DescriptorTable* descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto_getter() {
+  return &descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto;
+}
+// Force running AddDescriptors() at dynamic initialization time.
+PROTOBUF_ATTRIBUTE_INIT_PRIORITY2
+static ::_pbi::AddDescriptorsRunner dynamic_init_dummy_grpc_2fhealth_2fv1_2fhealth_2eproto(&descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto);
+namespace grpc {
+namespace health {
+namespace v1 {
+const ::google::protobuf::EnumDescriptor* HealthCheckResponse_ServingStatus_descriptor() {
+  ::google::protobuf::internal::AssignDescriptors(&descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto);
+  return file_level_enum_descriptors_grpc_2fhealth_2fv1_2fhealth_2eproto[0];
+}
+bool HealthCheckResponse_ServingStatus_IsValid(int value) {
+  switch (value) {
+    case 0:
+    case 1:
+    case 2:
+      return true;
+    default:
+      return false;
+  }
+}
+#if (__cplusplus < 201703) && \
+  (!defined(_MSC_VER) || (_MSC_VER >= 1900 && _MSC_VER < 1912))
+
+constexpr HealthCheckResponse_ServingStatus HealthCheckResponse::UNKNOWN;
+constexpr HealthCheckResponse_ServingStatus HealthCheckResponse::SERVING;
+constexpr HealthCheckResponse_ServingStatus HealthCheckResponse::NOT_SERVING;
+constexpr HealthCheckResponse_ServingStatus HealthCheckResponse::ServingStatus_MIN;
+constexpr HealthCheckResponse_ServingStatus HealthCheckResponse::ServingStatus_MAX;
+constexpr int HealthCheckResponse::ServingStatus_ARRAYSIZE;
+
+#endif  // (__cplusplus < 201703) &&
+        // (!defined(_MSC_VER) || (_MSC_VER >= 1900 && _MSC_VER < 1912))
+// ===================================================================
+
+class HealthCheckRequest::_Internal {
+ public:
+};
+
+HealthCheckRequest::HealthCheckRequest(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:grpc.health.v1.HealthCheckRequest)
+}
+HealthCheckRequest::HealthCheckRequest(const HealthCheckRequest& from) : ::google::protobuf::Message() {
+  HealthCheckRequest* const _this = this;
+  (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.service_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  _impl_.service_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.service_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_service().empty()) {
+    _this->_impl_.service_.Set(from._internal_service(), _this->GetArenaForAllocation());
+  }
+
+  // @@protoc_insertion_point(copy_constructor:grpc.health.v1.HealthCheckRequest)
+}
+inline void HealthCheckRequest::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.service_){},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+  _impl_.service_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        _impl_.service_.Set("", GetArenaForAllocation());
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+HealthCheckRequest::~HealthCheckRequest() {
+  // @@protoc_insertion_point(destructor:grpc.health.v1.HealthCheckRequest)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void HealthCheckRequest::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.service_.Destroy();
+}
+void HealthCheckRequest::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void HealthCheckRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:grpc.health.v1.HealthCheckRequest)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.service_.ClearToEmpty();
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* HealthCheckRequest::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 49, 2> HealthCheckRequest::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_HealthCheckRequest_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // string service = 1;
+    {::_pbi::TcParser::FastUS1,
+     {10, 63, 0, PROTOBUF_FIELD_OFFSET(HealthCheckRequest, _impl_.service_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // string service = 1;
+    {PROTOBUF_FIELD_OFFSET(HealthCheckRequest, _impl_.service_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kUtf8String | ::_fl::kRepAString)},
+  }},
+  // no aux_entries
+  {{
+    "\41\7\0\0\0\0\0\0"
+    "grpc.health.v1.HealthCheckRequest"
+    "service"
+  }},
+};
+
+::uint8_t* HealthCheckRequest::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:grpc.health.v1.HealthCheckRequest)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // string service = 1;
+  if (!this->_internal_service().empty()) {
+    const std::string& _s = this->_internal_service();
+    ::google::protobuf::internal::WireFormatLite::VerifyUtf8String(
+        _s.data(), static_cast<int>(_s.length()), ::google::protobuf::internal::WireFormatLite::SERIALIZE, "grpc.health.v1.HealthCheckRequest.service");
+    target = stream->WriteStringMaybeAliased(1, _s, target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:grpc.health.v1.HealthCheckRequest)
+  return target;
+}
+
+::size_t HealthCheckRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:grpc.health.v1.HealthCheckRequest)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string service = 1;
+  if (!this->_internal_service().empty()) {
+    total_size += 1 + ::google::protobuf::internal::WireFormatLite::StringSize(
+                                    this->_internal_service());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData HealthCheckRequest::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    HealthCheckRequest::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*HealthCheckRequest::GetClassData() const { return &_class_data_; }
+
+
+void HealthCheckRequest::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<HealthCheckRequest*>(&to_msg);
+  auto& from = static_cast<const HealthCheckRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:grpc.health.v1.HealthCheckRequest)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_service().empty()) {
+    _this->_internal_set_service(from._internal_service());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void HealthCheckRequest::CopyFrom(const HealthCheckRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:grpc.health.v1.HealthCheckRequest)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool HealthCheckRequest::IsInitialized() const {
+  return true;
+}
+
+void HealthCheckRequest::InternalSwap(HealthCheckRequest* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::_pbi::ArenaStringPtr::InternalSwap(&_impl_.service_, lhs_arena,
+                                       &other->_impl_.service_, rhs_arena);
+}
+
+::google::protobuf::Metadata HealthCheckRequest::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto_getter, &descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto_once,
+      file_level_metadata_grpc_2fhealth_2fv1_2fhealth_2eproto[0]);
+}
+// ===================================================================
+
+class HealthCheckResponse::_Internal {
+ public:
+};
+
+HealthCheckResponse::HealthCheckResponse(::google::protobuf::Arena* arena)
+    : ::google::protobuf::Message(arena) {
+  SharedCtor(arena);
+  // @@protoc_insertion_point(arena_constructor:grpc.health.v1.HealthCheckResponse)
+}
+HealthCheckResponse::HealthCheckResponse(const HealthCheckResponse& from)
+    : ::google::protobuf::Message(), _impl_(from._impl_) {
+  _internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(
+      from._internal_metadata_);
+  // @@protoc_insertion_point(copy_constructor:grpc.health.v1.HealthCheckResponse)
+}
+inline void HealthCheckResponse::SharedCtor(::_pb::Arena* arena) {
+  (void)arena;
+  new (&_impl_) Impl_{
+      decltype(_impl_.status_){0},
+      /*decltype(_impl_._cached_size_)*/ {},
+  };
+}
+HealthCheckResponse::~HealthCheckResponse() {
+  // @@protoc_insertion_point(destructor:grpc.health.v1.HealthCheckResponse)
+  _internal_metadata_.Delete<::google::protobuf::UnknownFieldSet>();
+  SharedDtor();
+}
+inline void HealthCheckResponse::SharedDtor() {
+  ABSL_DCHECK(GetArenaForAllocation() == nullptr);
+}
+void HealthCheckResponse::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+PROTOBUF_NOINLINE void HealthCheckResponse::Clear() {
+// @@protoc_insertion_point(message_clear_start:grpc.health.v1.HealthCheckResponse)
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.status_ = 0;
+  _internal_metadata_.Clear<::google::protobuf::UnknownFieldSet>();
+}
+
+const char* HealthCheckResponse::_InternalParse(
+    const char* ptr, ::_pbi::ParseContext* ctx) {
+  ptr = ::_pbi::TcParser::ParseLoop(this, ptr, ctx, &_table_.header);
+  return ptr;
+}
+
+
+PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1
+const ::_pbi::TcParseTable<0, 1, 0, 0, 2> HealthCheckResponse::_table_ = {
+  {
+    0,  // no _has_bits_
+    0, // no _extensions_
+    1, 0,  // max_field_number, fast_idx_mask
+    offsetof(decltype(_table_), field_lookup_table),
+    4294967294,  // skipmap
+    offsetof(decltype(_table_), field_entries),
+    1,  // num_field_entries
+    0,  // num_aux_entries
+    offsetof(decltype(_table_), field_names),  // no aux_entries
+    &_HealthCheckResponse_default_instance_._instance,
+    ::_pbi::TcParser::GenericFallback,  // fallback
+  }, {{
+    // .grpc.health.v1.HealthCheckResponse.ServingStatus status = 1;
+    {::_pbi::TcParser::SingularVarintNoZag1<::uint32_t, offsetof(HealthCheckResponse, _impl_.status_), 63>(),
+     {8, 63, 0, PROTOBUF_FIELD_OFFSET(HealthCheckResponse, _impl_.status_)}},
+  }}, {{
+    65535, 65535
+  }}, {{
+    // .grpc.health.v1.HealthCheckResponse.ServingStatus status = 1;
+    {PROTOBUF_FIELD_OFFSET(HealthCheckResponse, _impl_.status_), 0, 0,
+    (0 | ::_fl::kFcSingular | ::_fl::kOpenEnum)},
+  }},
+  // no aux_entries
+  {{
+  }},
+};
+
+::uint8_t* HealthCheckResponse::_InternalSerialize(
+    ::uint8_t* target,
+    ::google::protobuf::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:grpc.health.v1.HealthCheckResponse)
+  ::uint32_t cached_has_bits = 0;
+  (void)cached_has_bits;
+
+  // .grpc.health.v1.HealthCheckResponse.ServingStatus status = 1;
+  if (this->_internal_status() != 0) {
+    target = stream->EnsureSpace(target);
+    target = ::_pbi::WireFormatLite::WriteEnumToArray(
+        1, this->_internal_status(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target =
+        ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+            _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:grpc.health.v1.HealthCheckResponse)
+  return target;
+}
+
+::size_t HealthCheckResponse::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:grpc.health.v1.HealthCheckResponse)
+  ::size_t total_size = 0;
+
+  ::uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // .grpc.health.v1.HealthCheckResponse.ServingStatus status = 1;
+  if (this->_internal_status() != 0) {
+    total_size += 1 +
+                  ::_pbi::WireFormatLite::EnumSize(this->_internal_status());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::google::protobuf::Message::ClassData HealthCheckResponse::_class_data_ = {
+    ::google::protobuf::Message::CopyWithSourceCheck,
+    HealthCheckResponse::MergeImpl
+};
+const ::google::protobuf::Message::ClassData*HealthCheckResponse::GetClassData() const { return &_class_data_; }
+
+
+void HealthCheckResponse::MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg) {
+  auto* const _this = static_cast<HealthCheckResponse*>(&to_msg);
+  auto& from = static_cast<const HealthCheckResponse&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:grpc.health.v1.HealthCheckResponse)
+  ABSL_DCHECK_NE(&from, _this);
+  ::uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (from._internal_status() != 0) {
+    _this->_internal_set_status(from._internal_status());
+  }
+  _this->_internal_metadata_.MergeFrom<::google::protobuf::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void HealthCheckResponse::CopyFrom(const HealthCheckResponse& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:grpc.health.v1.HealthCheckResponse)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+PROTOBUF_NOINLINE bool HealthCheckResponse::IsInitialized() const {
+  return true;
+}
+
+void HealthCheckResponse::InternalSwap(HealthCheckResponse* other) {
+  using std::swap;
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  swap(_impl_.status_, other->_impl_.status_);
+}
+
+::google::protobuf::Metadata HealthCheckResponse::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto_getter, &descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto_once,
+      file_level_metadata_grpc_2fhealth_2fv1_2fhealth_2eproto[1]);
+}
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace v1
+}  // namespace health
+}  // namespace grpc
+namespace google {
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+// @@protoc_insertion_point(global_scope)
+#include "google/protobuf/port_undef.inc"
diff --git a/src/currency/build/generated/proto/grpc/health/v1/health.pb.h b/src/currency/build/generated/proto/grpc/health/v1/health.pb.h
new file mode 100644
index 0000000..ebe2598
--- /dev/null
+++ b/src/currency/build/generated/proto/grpc/health/v1/health.pb.h
@@ -0,0 +1,579 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: grpc/health/v1/health.proto
+
+#ifndef GOOGLE_PROTOBUF_INCLUDED_grpc_2fhealth_2fv1_2fhealth_2eproto_2epb_2eh
+#define GOOGLE_PROTOBUF_INCLUDED_grpc_2fhealth_2fv1_2fhealth_2eproto_2epb_2eh
+
+#include <limits>
+#include <string>
+#include <type_traits>
+
+#include "google/protobuf/port_def.inc"
+#if PROTOBUF_VERSION < 4024000
+#error "This file was generated by a newer version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please update"
+#error "your headers."
+#endif  // PROTOBUF_VERSION
+
+#if 4024004 < PROTOBUF_MIN_PROTOC_VERSION
+#error "This file was generated by an older version of protoc which is"
+#error "incompatible with your Protocol Buffer headers. Please"
+#error "regenerate this file with a newer version of protoc."
+#endif  // PROTOBUF_MIN_PROTOC_VERSION
+#include "google/protobuf/port_undef.inc"
+#include "google/protobuf/io/coded_stream.h"
+#include "google/protobuf/arena.h"
+#include "google/protobuf/arenastring.h"
+#include "google/protobuf/generated_message_tctable_decl.h"
+#include "google/protobuf/generated_message_util.h"
+#include "google/protobuf/metadata_lite.h"
+#include "google/protobuf/generated_message_reflection.h"
+#include "google/protobuf/message.h"
+#include "google/protobuf/repeated_field.h"  // IWYU pragma: export
+#include "google/protobuf/extension_set.h"  // IWYU pragma: export
+#include "google/protobuf/generated_enum_reflection.h"
+#include "google/protobuf/unknown_field_set.h"
+// @@protoc_insertion_point(includes)
+
+// Must be included last.
+#include "google/protobuf/port_def.inc"
+
+#define PROTOBUF_INTERNAL_EXPORT_grpc_2fhealth_2fv1_2fhealth_2eproto
+
+namespace google {
+namespace protobuf {
+namespace internal {
+class AnyMetadata;
+}  // namespace internal
+}  // namespace protobuf
+}  // namespace google
+
+// Internal implementation detail -- do not use these members.
+struct TableStruct_grpc_2fhealth_2fv1_2fhealth_2eproto {
+  static const ::uint32_t offsets[];
+};
+extern const ::google::protobuf::internal::DescriptorTable
+    descriptor_table_grpc_2fhealth_2fv1_2fhealth_2eproto;
+namespace grpc {
+namespace health {
+namespace v1 {
+class HealthCheckRequest;
+struct HealthCheckRequestDefaultTypeInternal;
+extern HealthCheckRequestDefaultTypeInternal _HealthCheckRequest_default_instance_;
+class HealthCheckResponse;
+struct HealthCheckResponseDefaultTypeInternal;
+extern HealthCheckResponseDefaultTypeInternal _HealthCheckResponse_default_instance_;
+}  // namespace v1
+}  // namespace health
+}  // namespace grpc
+namespace google {
+namespace protobuf {
+}  // namespace protobuf
+}  // namespace google
+
+namespace grpc {
+namespace health {
+namespace v1 {
+enum HealthCheckResponse_ServingStatus : int {
+  HealthCheckResponse_ServingStatus_UNKNOWN = 0,
+  HealthCheckResponse_ServingStatus_SERVING = 1,
+  HealthCheckResponse_ServingStatus_NOT_SERVING = 2,
+  HealthCheckResponse_ServingStatus_HealthCheckResponse_ServingStatus_INT_MIN_SENTINEL_DO_NOT_USE_ =
+      std::numeric_limits<::int32_t>::min(),
+  HealthCheckResponse_ServingStatus_HealthCheckResponse_ServingStatus_INT_MAX_SENTINEL_DO_NOT_USE_ =
+      std::numeric_limits<::int32_t>::max(),
+};
+
+bool HealthCheckResponse_ServingStatus_IsValid(int value);
+constexpr HealthCheckResponse_ServingStatus HealthCheckResponse_ServingStatus_ServingStatus_MIN = static_cast<HealthCheckResponse_ServingStatus>(0);
+constexpr HealthCheckResponse_ServingStatus HealthCheckResponse_ServingStatus_ServingStatus_MAX = static_cast<HealthCheckResponse_ServingStatus>(2);
+constexpr int HealthCheckResponse_ServingStatus_ServingStatus_ARRAYSIZE = 2 + 1;
+const ::google::protobuf::EnumDescriptor*
+HealthCheckResponse_ServingStatus_descriptor();
+template <typename T>
+const std::string& HealthCheckResponse_ServingStatus_Name(T value) {
+  static_assert(std::is_same<T, HealthCheckResponse_ServingStatus>::value ||
+                    std::is_integral<T>::value,
+                "Incorrect type passed to ServingStatus_Name().");
+  return HealthCheckResponse_ServingStatus_Name(static_cast<HealthCheckResponse_ServingStatus>(value));
+}
+template <>
+inline const std::string& HealthCheckResponse_ServingStatus_Name(HealthCheckResponse_ServingStatus value) {
+  return ::google::protobuf::internal::NameOfDenseEnum<HealthCheckResponse_ServingStatus_descriptor,
+                                                 0, 2>(
+      static_cast<int>(value));
+}
+inline bool HealthCheckResponse_ServingStatus_Parse(absl::string_view name, HealthCheckResponse_ServingStatus* value) {
+  return ::google::protobuf::internal::ParseNamedEnum<HealthCheckResponse_ServingStatus>(
+      HealthCheckResponse_ServingStatus_descriptor(), name, value);
+}
+
+// ===================================================================
+
+
+// -------------------------------------------------------------------
+
+class HealthCheckRequest final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:grpc.health.v1.HealthCheckRequest) */ {
+ public:
+  inline HealthCheckRequest() : HealthCheckRequest(nullptr) {}
+  ~HealthCheckRequest() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR HealthCheckRequest(::google::protobuf::internal::ConstantInitialized);
+
+  HealthCheckRequest(const HealthCheckRequest& from);
+  HealthCheckRequest(HealthCheckRequest&& from) noexcept
+    : HealthCheckRequest() {
+    *this = ::std::move(from);
+  }
+
+  inline HealthCheckRequest& operator=(const HealthCheckRequest& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline HealthCheckRequest& operator=(HealthCheckRequest&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const HealthCheckRequest& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const HealthCheckRequest* internal_default_instance() {
+    return reinterpret_cast<const HealthCheckRequest*>(
+               &_HealthCheckRequest_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    0;
+
+  friend void swap(HealthCheckRequest& a, HealthCheckRequest& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(HealthCheckRequest* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(HealthCheckRequest* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  HealthCheckRequest* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<HealthCheckRequest>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const HealthCheckRequest& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const HealthCheckRequest& from) {
+    HealthCheckRequest::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(HealthCheckRequest* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "grpc.health.v1.HealthCheckRequest";
+  }
+  protected:
+  explicit HealthCheckRequest(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kServiceFieldNumber = 1,
+  };
+  // string service = 1;
+  void clear_service() ;
+  const std::string& service() const;
+  template <typename Arg_ = const std::string&, typename... Args_>
+  void set_service(Arg_&& arg, Args_... args);
+  std::string* mutable_service();
+  PROTOBUF_NODISCARD std::string* release_service();
+  void set_allocated_service(std::string* ptr);
+
+  private:
+  const std::string& _internal_service() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_service(
+      const std::string& value);
+  std::string* _internal_mutable_service();
+
+  public:
+  // @@protoc_insertion_point(class_scope:grpc.health.v1.HealthCheckRequest)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 49, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::google::protobuf::internal::ArenaStringPtr service_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_grpc_2fhealth_2fv1_2fhealth_2eproto;
+};// -------------------------------------------------------------------
+
+class HealthCheckResponse final :
+    public ::google::protobuf::Message /* @@protoc_insertion_point(class_definition:grpc.health.v1.HealthCheckResponse) */ {
+ public:
+  inline HealthCheckResponse() : HealthCheckResponse(nullptr) {}
+  ~HealthCheckResponse() override;
+  template<typename = void>
+  explicit PROTOBUF_CONSTEXPR HealthCheckResponse(::google::protobuf::internal::ConstantInitialized);
+
+  HealthCheckResponse(const HealthCheckResponse& from);
+  HealthCheckResponse(HealthCheckResponse&& from) noexcept
+    : HealthCheckResponse() {
+    *this = ::std::move(from);
+  }
+
+  inline HealthCheckResponse& operator=(const HealthCheckResponse& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline HealthCheckResponse& operator=(HealthCheckResponse&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _internal_metadata_.unknown_fields<::google::protobuf::UnknownFieldSet>(::google::protobuf::UnknownFieldSet::default_instance);
+  }
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return _internal_metadata_.mutable_unknown_fields<::google::protobuf::UnknownFieldSet>();
+  }
+
+  static const ::google::protobuf::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::google::protobuf::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::google::protobuf::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const HealthCheckResponse& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const HealthCheckResponse* internal_default_instance() {
+    return reinterpret_cast<const HealthCheckResponse*>(
+               &_HealthCheckResponse_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    1;
+
+  friend void swap(HealthCheckResponse& a, HealthCheckResponse& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(HealthCheckResponse* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::google::protobuf::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(HealthCheckResponse* other) {
+    if (other == this) return;
+    ABSL_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  HealthCheckResponse* New(::google::protobuf::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<HealthCheckResponse>(arena);
+  }
+  using ::google::protobuf::Message::CopyFrom;
+  void CopyFrom(const HealthCheckResponse& from);
+  using ::google::protobuf::Message::MergeFrom;
+  void MergeFrom( const HealthCheckResponse& from) {
+    HealthCheckResponse::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::google::protobuf::Message& to_msg, const ::google::protobuf::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  ::size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::google::protobuf::internal::ParseContext* ctx) final;
+  ::uint8_t* _InternalSerialize(
+      ::uint8_t* target, ::google::protobuf::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::google::protobuf::Arena* arena);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(HealthCheckResponse* other);
+
+  private:
+  friend class ::google::protobuf::internal::AnyMetadata;
+  static ::absl::string_view FullMessageName() {
+    return "grpc.health.v1.HealthCheckResponse";
+  }
+  protected:
+  explicit HealthCheckResponse(::google::protobuf::Arena* arena);
+  public:
+
+  static const ClassData _class_data_;
+  const ::google::protobuf::Message::ClassData*GetClassData() const final;
+
+  ::google::protobuf::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  using ServingStatus = HealthCheckResponse_ServingStatus;
+  static constexpr ServingStatus UNKNOWN = HealthCheckResponse_ServingStatus_UNKNOWN;
+  static constexpr ServingStatus SERVING = HealthCheckResponse_ServingStatus_SERVING;
+  static constexpr ServingStatus NOT_SERVING = HealthCheckResponse_ServingStatus_NOT_SERVING;
+  static inline bool ServingStatus_IsValid(int value) {
+    return HealthCheckResponse_ServingStatus_IsValid(value);
+  }
+  static constexpr ServingStatus ServingStatus_MIN = HealthCheckResponse_ServingStatus_ServingStatus_MIN;
+  static constexpr ServingStatus ServingStatus_MAX = HealthCheckResponse_ServingStatus_ServingStatus_MAX;
+  static constexpr int ServingStatus_ARRAYSIZE = HealthCheckResponse_ServingStatus_ServingStatus_ARRAYSIZE;
+  static inline const ::google::protobuf::EnumDescriptor* ServingStatus_descriptor() {
+    return HealthCheckResponse_ServingStatus_descriptor();
+  }
+  template <typename T>
+  static inline const std::string& ServingStatus_Name(T value) {
+    return HealthCheckResponse_ServingStatus_Name(value);
+  }
+  static inline bool ServingStatus_Parse(absl::string_view name, ServingStatus* value) {
+    return HealthCheckResponse_ServingStatus_Parse(name, value);
+  }
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kStatusFieldNumber = 1,
+  };
+  // .grpc.health.v1.HealthCheckResponse.ServingStatus status = 1;
+  void clear_status() ;
+  ::grpc::health::v1::HealthCheckResponse_ServingStatus status() const;
+  void set_status(::grpc::health::v1::HealthCheckResponse_ServingStatus value);
+
+  private:
+  ::grpc::health::v1::HealthCheckResponse_ServingStatus _internal_status() const;
+  void _internal_set_status(::grpc::health::v1::HealthCheckResponse_ServingStatus value);
+
+  public:
+  // @@protoc_insertion_point(class_scope:grpc.health.v1.HealthCheckResponse)
+ private:
+  class _Internal;
+
+  friend class ::google::protobuf::internal::TcParser;
+  static const ::google::protobuf::internal::TcParseTable<0, 1, 0, 0, 2> _table_;
+  template <typename T> friend class ::google::protobuf::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    int status_;
+    mutable ::google::protobuf::internal::CachedSize _cached_size_;
+    PROTOBUF_TSAN_DECLARE_MEMBER
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_grpc_2fhealth_2fv1_2fhealth_2eproto;
+};
+
+// ===================================================================
+
+
+
+
+// ===================================================================
+
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif  // __GNUC__
+// -------------------------------------------------------------------
+
+// HealthCheckRequest
+
+// string service = 1;
+inline void HealthCheckRequest::clear_service() {
+  _impl_.service_.ClearToEmpty();
+}
+inline const std::string& HealthCheckRequest::service() const {
+  // @@protoc_insertion_point(field_get:grpc.health.v1.HealthCheckRequest.service)
+  return _internal_service();
+}
+template <typename Arg_, typename... Args_>
+inline PROTOBUF_ALWAYS_INLINE void HealthCheckRequest::set_service(Arg_&& arg,
+                                                     Args_... args) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.service_.Set(static_cast<Arg_&&>(arg), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:grpc.health.v1.HealthCheckRequest.service)
+}
+inline std::string* HealthCheckRequest::mutable_service() {
+  std::string* _s = _internal_mutable_service();
+  // @@protoc_insertion_point(field_mutable:grpc.health.v1.HealthCheckRequest.service)
+  return _s;
+}
+inline const std::string& HealthCheckRequest::_internal_service() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return _impl_.service_.Get();
+}
+inline void HealthCheckRequest::_internal_set_service(const std::string& value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.service_.Set(value, GetArenaForAllocation());
+}
+inline std::string* HealthCheckRequest::_internal_mutable_service() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  return _impl_.service_.Mutable( GetArenaForAllocation());
+}
+inline std::string* HealthCheckRequest::release_service() {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  // @@protoc_insertion_point(field_release:grpc.health.v1.HealthCheckRequest.service)
+  return _impl_.service_.Release();
+}
+inline void HealthCheckRequest::set_allocated_service(std::string* value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  _impl_.service_.SetAllocated(value, GetArenaForAllocation());
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+        if (_impl_.service_.IsDefault()) {
+          _impl_.service_.Set("", GetArenaForAllocation());
+        }
+  #endif  // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:grpc.health.v1.HealthCheckRequest.service)
+}
+
+// -------------------------------------------------------------------
+
+// HealthCheckResponse
+
+// .grpc.health.v1.HealthCheckResponse.ServingStatus status = 1;
+inline void HealthCheckResponse::clear_status() {
+  _impl_.status_ = 0;
+}
+inline ::grpc::health::v1::HealthCheckResponse_ServingStatus HealthCheckResponse::status() const {
+  // @@protoc_insertion_point(field_get:grpc.health.v1.HealthCheckResponse.status)
+  return _internal_status();
+}
+inline void HealthCheckResponse::set_status(::grpc::health::v1::HealthCheckResponse_ServingStatus value) {
+  _internal_set_status(value);
+  // @@protoc_insertion_point(field_set:grpc.health.v1.HealthCheckResponse.status)
+}
+inline ::grpc::health::v1::HealthCheckResponse_ServingStatus HealthCheckResponse::_internal_status() const {
+  PROTOBUF_TSAN_READ(&_impl_._tsan_detect_race);
+  return static_cast<::grpc::health::v1::HealthCheckResponse_ServingStatus>(_impl_.status_);
+}
+inline void HealthCheckResponse::_internal_set_status(::grpc::health::v1::HealthCheckResponse_ServingStatus value) {
+  PROTOBUF_TSAN_WRITE(&_impl_._tsan_detect_race);
+  ;
+  _impl_.status_ = value;
+}
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif  // __GNUC__
+
+// @@protoc_insertion_point(namespace_scope)
+}  // namespace v1
+}  // namespace health
+}  // namespace grpc
+
+
+namespace google {
+namespace protobuf {
+
+template <>
+struct is_proto_enum<::grpc::health::v1::HealthCheckResponse_ServingStatus> : std::true_type {};
+template <>
+inline const EnumDescriptor* GetEnumDescriptor<::grpc::health::v1::HealthCheckResponse_ServingStatus>() {
+  return ::grpc::health::v1::HealthCheckResponse_ServingStatus_descriptor();
+}
+
+}  // namespace protobuf
+}  // namespace google
+
+// @@protoc_insertion_point(global_scope)
+
+#include "google/protobuf/port_undef.inc"
+
+#endif  // GOOGLE_PROTOBUF_INCLUDED_grpc_2fhealth_2fv1_2fhealth_2eproto_2epb_2eh
diff --git a/src/currency/build/generated/proto/grpc/health/v1/health_mock.grpc.pb.h b/src/currency/build/generated/proto/grpc/health/v1/health_mock.grpc.pb.h
new file mode 100644
index 0000000..69e827a
--- /dev/null
+++ b/src/currency/build/generated/proto/grpc/health/v1/health_mock.grpc.pb.h
@@ -0,0 +1,30 @@
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: grpc/health/v1/health.proto
+
+#ifndef GRPC_MOCK_grpc_2fhealth_2fv1_2fhealth_2eproto__INCLUDED
+#define GRPC_MOCK_grpc_2fhealth_2fv1_2fhealth_2eproto__INCLUDED
+
+#include "grpc/health/v1/health.pb.h"
+#include "grpc/health/v1/health.grpc.pb.h"
+
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/sync_stream.h>
+#include <gmock/gmock.h>
+namespace grpc {
+namespace health {
+namespace v1 {
+
+class MockHealthStub : public Health::StubInterface {
+ public:
+  MOCK_METHOD3(Check, ::grpc::Status(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::health::v1::HealthCheckResponse* response));
+  MOCK_METHOD3(AsyncCheckRaw, ::grpc::ClientAsyncResponseReaderInterface< ::grpc::health::v1::HealthCheckResponse>*(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq));
+  MOCK_METHOD3(PrepareAsyncCheckRaw, ::grpc::ClientAsyncResponseReaderInterface< ::grpc::health::v1::HealthCheckResponse>*(::grpc::ClientContext* context, const ::grpc::health::v1::HealthCheckRequest& request, ::grpc::CompletionQueue* cq));
+};
+
+}  // namespace v1
+}  // namespace health
+}  // namespace grpc
+
+
+#endif  // GRPC_MOCK_grpc_2fhealth_2fv1_2fhealth_2eproto__INCLUDED