exception class的用法和样例：
例句
- Here we defined our application-specific exception types by deriving them from the standard exception classes.
在这里，通过从标准异常类派生，定义了特定于应用程序的异常类型。 - The name of the exception class for the player to activate and play back before the message is routed to the dead letter queue.
用于在消息被路由到死信队列之前由播放机激活并播放的异常类的名称。
