public GrpcOperationsStub getOperationsStub() {
    return operationsStub;
  }
Constructs an instance of GrpcTextToSpeechLongAudioSynthesizeStub, 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-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/GrpcTextToSpeechLongAudioSynthesizeStub.java