public com.google.longrunning.Operation updateCustomClass(
        com.google.cloud.speech.v2.UpdateCustomClassRequest request) {
      return io.grpc.stub.ClientCalls.blockingUnaryCall(
          getChannel(), getUpdateCustomClassMethod(), getCallOptions(), request);
    }
<pre>
Updates the [CustomClass][google.cloud.speech.v2.CustomClass].
</pre>
java-speech/grpc-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/SpeechGrpc.java