public final OperationCallable<CreateCustomClassRequest, CustomClass, OperationMetadata>
      createCustomClassOperationCallable() {
    return stub.createCustomClassOperationCallable();
  }
Creates a [CustomClass][google.cloud.speech.v2.CustomClass].

<p>Sample code:

<pre>{@code
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in
// https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
try (SpeechClient speechClient = SpeechClient.create()) {
  CreateCustomClassRequest request =
      CreateCustomClassRequest.newBuilder()
          .setCustomClass(CustomClass.newBuilder().build())
          .setValidateOnly(true)
          .setCustomClassId("customClassId1871032322")
          .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
          .build();
  OperationFuture<CustomClass, OperationMetadata> future =
      speechClient.createCustomClassOperationCallable().futureCall(request);
  // Do something.
  CustomClass response = future.get();
}
}</pre>
java-speech/google-cloud-speech/src/main/java/com/google/cloud/speech/v2/SpeechClient.java