public com.google.cloud.speech.v2.SpeechAdaptation.AdaptationPhraseSet.Builder
        addPhraseSetsBuilder() {
      return getPhraseSetsFieldBuilder()
          .addBuilder(
              com.google.cloud.speech.v2.SpeechAdaptation.AdaptationPhraseSet.getDefaultInstance());
    }
<pre>
A list of inline or referenced PhraseSets.
</pre>

<code>repeated .google.cloud.speech.v2.SpeechAdaptation.AdaptationPhraseSet phrase_sets = 1;
</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/SpeechAdaptation.java