All the customizedclass has to do is define a mapping, NS_TO_HANDLER_MAPPING, which for each namespace defines another mapping from SOAP body element name to a handler function.
定制的类所要做的只是定义一个映射ns TO HANDLER MAPPING，它为每个名称空间定义另一个从SOAP主体元素名到处理程序函数的映射。
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Ideally, the user can specify a specific interest or a group membership and automatically see new information customized for that class of user.