If no message exists, the operation does not wait around for one; it simply prepares another refresh Response with a new refresh interval period and returns that back to the caller.
如果符合条件的消息不存在，操作并不会等待消息的出现。它只是简单地用一个新的刷新间隔周期来组装一个刷新响应并将它返回给调用者。
If no message exists, the operation does not wait around for one; it simply prepares another refresh Response with a new refresh interval period and returns that back to the caller.
如果符合条件的消息不存在，操作并不会等待消息的出现。它只是简单地用一个新的刷新间隔周期来组装一个刷新响应并将它返回给调用者。
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