public Builder clearPronunciation() {
      pronunciation_ = getDefaultInstance().getPronunciation();
      bitField0_ = (bitField0_ & ~0x00000004);
      onChanged();
      return this;
    }
<pre>
The pronunciation of the phrase. This must be in the phonetic encoding
specified above.
</pre>

<code>optional string pronunciation = 3;</code>

@return This builder for chaining.
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomPronunciationParams.java