bugfix：设备地址变化会引起目录订阅任务失效，需要重新添加

lishuyuan

2023-11-01 5cd2e2c41b6460ea628b158e9f22b6788e99eee1

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package com.genersoft.iot.vmp.service.bean;
 
public interface PlayBackCallback<T> {
 
    void call(PlayBackResult<T> msg);
 
}