@java.lang.Override
    public com.google.cloud.visionai.v1.ReceivePacketsControlResponseOrBuilder
        getControlOrBuilder() {
      if ((responseCase_ == 3) && (controlBuilder_ != null)) {
        return controlBuilder_.getMessageOrBuilder();
      } else {
        if (responseCase_ == 3) {
          return (com.google.cloud.visionai.v1.ReceivePacketsControlResponse) response_;
        }
        return com.google.cloud.visionai.v1.ReceivePacketsControlResponse.getDefaultInstance();
      }
    }
<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