public Builder mergeLanguages(com.google.cloud.speech.v2.LanguageMetadata value) {
      if (languagesBuilder_ == null) {
        if (((bitField0_ & 0x00000001) != 0)
            && languages_ != null
            && languages_ != com.google.cloud.speech.v2.LanguageMetadata.getDefaultInstance()) {
          getLanguagesBuilder().mergeFrom(value);
        } else {
          languages_ = value;
        }
      } else {
        languagesBuilder_.mergeFrom(value);
      }
      if (languages_ != null) {
        bitField0_ |= 0x00000001;
        onChanged();
      }
      return this;
    }
<pre>
Information about available locales, models, and features represented in
the hierarchical structure of locales -&gt; models -&gt; features
</pre>

<code>.google.cloud.speech.v2.LanguageMetadata languages = 1;</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/LocationsMetadata.java