public com.google.protobuf.ByteString getPronunciationBytes() {
      java.lang.Object ref = pronunciation_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        pronunciation_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
The pronunciation of the phrase. This must be in the phonetic encoding
specified above.
</pre>

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

@return The bytes for pronunciation.
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/CustomPronunciationParams.java