public Builder clearLanguages() {
      if (languagesBuilder_ == null) {
        languages_ = java.util.Collections.emptyList();
        bitField0_ = (bitField0_ & ~0x00000001);
        onChanged();
      } else {
        languagesBuilder_.clear();
      }
      return this;
    }
<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.v3.SupportedLanguage languages = 1;</code>
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/SupportedLanguages.java