public String getModel() {
    return model;
  }
Returns the translation model used to translate the text. This value is only available if a
result from {@link Translate.TranslateOption#model(String)} was passed to {@link
Translate#translate(List, Translate.TranslateOption...)}.

<p>Please note that you must be whitelisted to use the {@link
Translate.TranslateOption#model(String)} option, otherwise translation will fail.
java-translate/google-cloud-translate/src/main/java/com/google/cloud/translate/Translation.java