Method on_done

examples/server/server.py:15581–15584

(result: OpenAICompletion)

            mailbox.put(chunk)

        def on_done(result: OpenAICompletion) -> None:
            result_box["result"] = result
            done.set()
            mailbox.put(sentinel)

        def on_error(exc: BaseException) -> None:
            error_box["error"] = exc