public PagedCallSettings.Builder<
            ListCustomClassesRequest, ListCustomClassesResponse, ListCustomClassesPagedResponse>
        listCustomClassesSettings() {
      return listCustomClassesSettings;
    }
Returns the builder for the settings used for calls to listCustomClasses.
java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v1p1beta1/stub/AdaptationStubSettings.java