public Builder setPhraseBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      phrase_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }
<pre>
The phrase to which the customization is applied.
The phrase can be multiple words, such as proper nouns, but shouldn't span
the length of the sentence.
</pre>

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

@param value The bytes for phrase to set.
@return This builder for chaining.
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomPronunciationParams.java