@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      audioContent_ = com.google.protobuf.ByteString.EMPTY;
      return this;
    }
<pre>
`StreamingSynthesizeResponse` is the only message returned to the
client by `StreamingSynthesize` method. A series of zero or more
`StreamingSynthesizeResponse` messages are streamed back to the client.
</pre>

Protobuf type {@code google.cloud.texttospeech.v1.StreamingSynthesizeResponse}
java-texttospeech/proto-google-cloud-texttospeech-v1/src/main/java/com/google/cloud/texttospeech/v1/StreamingSynthesizeResponse.java