public com.google.rpc.StatusOrBuilder getResponseStatusOrBuilder() {
      if (responseStatusBuilder_ != null) {
        return responseStatusBuilder_.getMessageOrBuilder();
      } else {
        return responseStatus_ == null
            ? com.google.rpc.Status.getDefaultInstance()
            : responseStatus_;
      }
    }
<pre>
Output only. The response from the worker for this attempt.

If `response_time` is unset, then the task has not been attempted or is
currently running and the `response_status` field is meaningless.
</pre>

<code>.google.rpc.Status response_status = 4;</code>
java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/Attempt.java