A deep clone of an object creates a copy of the object and a copy of everything directly or indirectly referenced by that object.
对象的深层克隆创建对象的副本以及该对象直接或间接引用的所有内容的副本。
This creates a complete copy of the current binding element object tree, also called a deep clone.
这将创建当前绑定元素对象树的完整副本，也称为深层克隆。
A "deep" copy, in contrast, would also recursively clone nested objects.
相对应的“深度”拷贝，也会递归地复制嵌套对象。
Returning a deep clone enables the runtime to support the case in which multiple custom bindings share a custom binding element.
通过返回深层克隆，运行时将能够支持多个自定义绑定共用一个自定义绑定元素的情况。
Returning a deep clone enables the runtime to support the case in which multiple custom bindings share a custom binding element.
通过返回深层克隆，运行时将能够支持多个自定义绑定共用一个自定义绑定元素的情况。
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