chat().createAndPoll()执行完成之后程序不会结束

chat().createAndPoll()执行完成之后程序不会结束。程序一直挂在那，貌似有什么线程卡住了。
`
public static void main(String[] args) throws Exception {
String cozeAPIToken = "cozeAPIToken";
String cozeAPIBase = Consts.COZE_CN_BASE_URL;
CozeAPI coze = new CozeAPI.Builder().auth(new TokenAuth(cozeAPIToken)).baseURL(cozeAPIBase).build();

CreateChatReq req =
CreateChatReq.builder()
.botID("botID")
.userID("123")
.messages(Collections.singletonList(Message.buildUserQuestionText("翻译\"你好，世界!\"")))
.build();
ChatPoll chat2 = coze.chat().createAndPoll(req, 3000L);
System.out.println(chat2.getMessages().get(0).getContent());
coze.shutdownExecutor();

}
`


Start by running the supplied Java main example with chat().createAndPoll(req, 3000L), then inspect the lifecycle around createAndPoll and coze.shutdownExecutor(). Confirm whether the process remains alive after the response is printed and define done as the program exiting cleanly after polling completes.

Written by the indexing model from the issue text.