public UnaryCallable<ListCustomClassesRequest, ListCustomClassesPagedResponse>
      listCustomClassesPagedCallable() {
    throw new UnsupportedOperationException("Not implemented: listCustomClassesPagedCallable()");
  }
Base stub class for the Speech service API.

<p>This class is for advanced usage and reflects the underlying API directly.
java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/stub/SpeechStub.java