public TextToSpeechLongAudioSynthesizeStub getStub() {
    return stub;
  }
Constructs an instance of TextToSpeechLongAudioSynthesizeClient, 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/v1/TextToSpeechLongAudioSynthesizeClient.java