public boolean hasPhrase() {
      return ((bitField0_ & 0x00000001) != 0);
    }
<pre>
The phrase to which the customization will be applied.
The phrase can be multiple words (in the case of proper nouns etc), but
should not span to a whole sentence.
</pre>

<code>optional string phrase = 1;</code>

@return Whether the phrase field is set.
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/CustomPronunciationParams.java