@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (responseCase_ == 1) {
      output.writeMessage(1, (com.google.cloud.visionai.v1.Packet) response_);
    }
    if (responseCase_ == 3) {
      output.writeMessage(
          3, (com.google.cloud.visionai.v1.ReceivePacketsControlResponse) response_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
A control message from the server.
</pre>

<code>.google.cloud.visionai.v1.ReceivePacketsControlResponse control = 3;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ReceivePacketsResponse.java