public Builder clearPhraseSet() {
      bitField0_ = (bitField0_ & ~0x00000004);
      phraseSet_ = null;
      if (phraseSetBuilder_ != null) {
        phraseSetBuilder_.dispose();
        phraseSetBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Required. The phrase set to create.
</pre>

<code>
.google.cloud.speech.v1.PhraseSet phrase_set = 3 [(.google.api.field_behavior) = REQUIRED];
</code>
java-speech/proto-google-cloud-speech-v1/src/main/java/com/google/cloud/speech/v1/CreatePhraseSetRequest.java