Tree security label component: a tree is a collection of elements representing a complex hierarchy having multiple nodes and branches.

树安全标签组件：树是一个元素集合，用于表示有多个节点和分支的复杂层次关系。

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The rootNodes element under ClassificationTaxonomy represents a list of classes that constitute the root nodes of the classification hierarchy.

ClassificationTaxonomy 下的 rootNodes 元素表示构成该分类层次结构的根节点的分类列表。

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LevelBasedHierarchy is used to define a hierarchy on the basis of levels alone or on the basis of levels and linked nodes.

LevelBasedHierarchy用于仅根据级别或者同时根据级别和链接节点定义层次。

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