@Override
  public BidiStreamingCallable<StreamingRawPredictRequest, StreamingRawPredictResponse>
      streamingRawPredictCallable() {
    throw new UnsupportedOperationException(
        "Not implemented: streamingRawPredictCallable(). REST transport is not implemented for this method yet.");
  }
Constructs an instance of HttpJsonPredictionServiceStub, using the given settings. This is
protected so that it is easy to make a subclass, but otherwise, the static factory methods
should be preferred.
java-vertexai/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/api/stub/HttpJsonPredictionServiceStub.java