When the user sees an error message, it is derived from the description string of the exception that was thrown, rather than from the exception class.
当用户看到错误消息时，该消息从引发的异常的描述字符串派生，而不是从异常类派生。
This parameter specifies a description string that is displayed next to the module name when clients obtain a list of available modules. The default is no comment.
该参数指定一个在客户端获取有效模块列表时显示在模块名称旁边的描述字符串。默认值是无备注。
Include extra information in an exception (in addition to the description string) only when there is a programmatic scenario where the additional information is useful.
仅当存在附加信息有用的编程方案时，才在异常中包含附加信息(不包括描述字符串)。
Include extra information in an exception (in addition to the description string) only when there is a programmatic scenario where the additional information is useful.
仅当存在附加信息有用的编程方案时，才在异常中包含附加信息(不包括描述字符串)。
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