In the case of the tree object, Listing 11 shows a program to add a node to a tree object captured as verification point.

在tree对象中，列表11显示了一个添加节点到作为验证点获取的tree对象的程序。

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Listing 1 instantiates a default tree viewer; you can also customize the tree and instantiate the tree viewer by using a constructor with a tree object as the parameter.

清单1实例化一个默认的树查看器；您也可以定制树，并用树对象作为参数，用构造函数实例化树查看器。

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Listing 1 instantiates a default tree viewer; you can also customize the tree and instantiate the tree viewer by using a constructor with a tree object as the parameter.

清单1实例化一个默认的树查看器；您也可以定制树，并用树对象作为参数，用构造函数实例化树查看器。

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