通过使用XML数据模型，就可以取消整个数据对象包装器层次结构，让开发人员将注意力集中在业务逻辑上，而不会为业务数据管理分心。

Using the XML data model, the whole hierarchy of data object wrappers can be eliminated, leaving the programmer to focus on the business logic rather than on the business data management.

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可以对指定的接口、绑定句柄列表（每个支持的协议一个句柄）和指定的对象 UUID 列表执行取消注册。

Un-registration is done on the specified interface, on list of binding handles (one each for each supported protocol) and on the list of object UUIDs specified.

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工厂对象实现取消引用逻辑。

The factory object implements your de-referencing logic.

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