因此我们用一个返回通知类型和接收到通知的时间的实现来覆盖那个方法。

So we override that method with an implementation which returns the notification's type and the time at which we received the notification.

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用户既可以使用实例ID来轮询该任务的状态，也可以等待任务完成时返回结果的通知。

The user can either poll the task's state using the Instance ID, or await a notification returning the result of a finished task.

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可以通过更改objectname查询字符串或对方法调用使用筛选参数来减少返回的通知。

You can reduce the notifications returned by changing the ObjectName query string, or by using the filtering parameter on the method call.

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