public UnaryCallable<ListCustomClassesRequest, ListCustomClassesResponse>
      listCustomClassesCallable() {
    throw new UnsupportedOperationException("Not implemented: listCustomClassesCallable()");
  }
Base stub class for the Adaptation 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/v1p1beta1/stub/AdaptationStub.java