@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    for (int i = 0; i < voices_.size(); i++) {
      output.writeMessage(1, voices_.get(i));
    }
    getUnknownFields().writeTo(output);
  }
<pre>
The list of voices.
</pre>

<code>repeated .google.cloud.texttospeech.v1beta1.Voice voices = 1;</code>
java-texttospeech/proto-google-cloud-texttospeech-v1beta1/src/main/java/com/google/cloud/texttospeech/v1beta1/ListVoicesResponse.java