public int getLanguagesCount() {
      if (languagesBuilder_ == null) {
        return languages_.size();
      } else {
        return languagesBuilder_.getCount();
      }
    }
<pre>
A list of supported language responses. This list contains an entry
for each language the Translation API supports.
</pre>

<code>repeated .google.cloud.translation.v3beta1.SupportedLanguage languages = 1;</code>
java-translate/proto-google-cloud-translate-v3beta1/src/main/java/com/google/cloud/translate/v3beta1/SupportedLanguages.java