一定要注意，虽然这种操作只是试图改变现有节点的名称，但是在某些情况下，其实现可能做不到真正地重命名节点。
It is important to note that while this operation attempts to simply change the name of the existing node, in some cases, the implementation may not be able to actually rename the node.
ButterflyXmlDocument接口抽象不需要改变现有代码，就可实现未来扩展。
The ButterflyXmlDocument interface abstraction allows for future extensions without changes to the existing code.
对你们许多人来说，这将会是一个激动人心的变现，所有你们相信的一切都会实现。
For many of you, this will be an exciting realisation of all you believed would happen.
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