public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
      return com.google.cloud.speech.v1.SpeechAdaptationProto
          .internal_static_google_cloud_speech_v1_ListCustomClassesRequest_descriptor;
    }
<pre>
Message sent by the client for the `ListCustomClasses` method.
</pre>

Protobuf type {@code google.cloud.speech.v1.ListCustomClassesRequest}
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/ListCustomClassesRequest.java