text: // Copyright 2022 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
  //
  //      https://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.
  
  // Generated by the Codegen C++ plugin.
  // If you make any local changes, they will be lost.
  // source: google/cloud/documentai/v1/document_processor_service.proto
  
  #ifndef GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_DOCUMENTAI_DOCUMENT_PROCESSOR_CONNECTION_H
  #define GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_DOCUMENTAI_DOCUMENT_PROCESSOR_CONNECTION_H
  
  #include "google/cloud/documentai/document_processor_connection_idempotency_policy.h"
  #include "google/cloud/documentai/internal/document_processor_retry_traits.h"
  #include "google/cloud/documentai/internal/document_processor_stub.h"
  #include "google/cloud/backoff_policy.h"
  #include "google/cloud/future.h"
  #include "google/cloud/options.h"
  #include "google/cloud/polling_policy.h"
  #include "google/cloud/status_or.h"
  #include "google/cloud/version.h"
  #include <google/longrunning/operations.grpc.pb.h>
  #include <memory>
  
  namespace google {
  namespace cloud {
  namespace documentai {
  GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_BEGIN
  
  using DocumentProcessorServiceRetryPolicy =
      ::google::cloud::internal::TraitBasedRetryPolicy<
          documentai_internal::DocumentProcessorServiceRetryTraits>;
  
  using DocumentProcessorServiceLimitedTimeRetryPolicy =
      ::google::cloud::internal::LimitedTimeRetryPolicy<
          documentai_internal::DocumentProcessorServiceRetryTraits>;
  
  using DocumentProcessorServiceLimitedErrorCountRetryPolicy =
      ::google::cloud::internal::LimitedErrorCountRetryPolicy<
          documentai_internal::DocumentProcessorServiceRetryTraits>;
  
  class DocumentProcessorServiceConnection {
   public:
    virtual ~DocumentProcessorServiceConnection() = 0;
  
    virtual Options options() { return Options{}; }
  
    virtual StatusOr<google::cloud::documentai::v1::ProcessResponse>
    ProcessDocument(google::cloud::documentai::v1::ProcessRequest const& request);
  
    virtual future<StatusOr<google::cloud::documentai::v1::BatchProcessResponse>>
    BatchProcessDocuments(
        google::cloud::documentai::v1::BatchProcessRequest const& request);
  
    virtual future<
        StatusOr<google::cloud::documentai::v1::ReviewDocumentResponse>>
    ReviewDocument(
        google::cloud::documentai::v1::ReviewDocumentRequest const& request);
  };
  
  std::shared_ptr<DocumentProcessorServiceConnection>
  MakeDocumentProcessorServiceConnection(Options options = {});
  
  GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_END
  }  // namespace documentai
  }  // namespace cloud
  }  // namespace google
  
  namespace google {
  namespace cloud {
  namespace documentai_internal {
  GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_BEGIN
  
  std::shared_ptr<documentai::DocumentProcessorServiceConnection>
  MakeDocumentProcessorServiceConnection(
      std::shared_ptr<DocumentProcessorServiceStub> stub, Options options);
  
  GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_END
  }  // namespace documentai_internal
  }  // namespace cloud
  }  // namespace google
  
  #endif  // GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_DOCUMENTAI_DOCUMENT_PROCESSOR_CONNECTION_H
  