public final UnaryCallable<GetSupportedLanguagesRequest, SupportedLanguages>
      getSupportedLanguagesCallable() {
    return stub.getSupportedLanguagesCallable();
  }
Returns a list of supported languages for translation.

<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 (TranslationServiceClient translationServiceClient = TranslationServiceClient.create()) {
  GetSupportedLanguagesRequest request =
      GetSupportedLanguagesRequest.newBuilder()
          .setParent(LocationName.of("[PROJECT]", "[LOCATION]").toString())
          .setDisplayLanguageCode("displayLanguageCode-1457478841")
          .setModel("model104069929")
          .build();
  ApiFuture<SupportedLanguages> future =
      translationServiceClient.getSupportedLanguagesCallable().futureCall(request);
  // Do something.
  SupportedLanguages response = future.get();
}
}</pre>
java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/v3beta1/TranslationServiceClient.java