@java.lang.Override
  public int getSerializedSize() {
    int size = memoizedSize;
    if (size != -1) return size;

    size = 0;
    if (((bitField0_ & 0x00000001) != 0)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, phrase_);
    }
    if (((bitField0_ & 0x00000002) != 0)) {
      size += com.google.protobuf.CodedOutputStream.computeEnumSize(2, phoneticEncoding_);
    }
    if (((bitField0_ & 0x00000004) != 0)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, pronunciation_);
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }
<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