@Override
  public <RequestT, ResponseT>
      BidiStreamingCallable<RequestT, ResponseT> createBidiStreamingCallable(
          GrpcCallSettings<RequestT, ResponseT> grpcCallSettings,
          StreamingCallSettings<RequestT, ResponseT> callSettings,
          ClientContext clientContext) {
    return GrpcCallableFactory.createBidiStreamingCallable(
        grpcCallSettings, callSettings, clientContext);
  }
gRPC callable factory implementation for the ProductSearch service API.

<p>This class is for advanced usage.
java-vision/google-cloud-vision/src/main/java/com/google/cloud/vision/v1p4beta1/stub/GrpcProductSearchCallableFactory.java