public UnaryCallSettings.Builder<SynthesizeSpeechRequest, SynthesizeSpeechResponse>
        synthesizeSpeechSettings() {
      return synthesizeSpeechSettings;
    }
Returns the builder for the settings used for calls to synthesizeSpeech.
java-texttospeech/google-cloud-texttospeech/src/main/java/com/google/cloud/texttospeech/v1beta1/stub/TextToSpeechStubSettings.java