This attribute is assigned when binding the dataTable tag and is also used to generate binding expressions for other JSF components nested inside the dataTable.
在捆绑 dataTable 标签时，会分配属性，该属性还用于为 dataTable 之内的其他 JSF 组件生成捆绑表达式。
When overridden in a derived class, searches for the specified nested type, using the specified binding constraints.
在衍生类别中覆写时，使用指定的系结条件约束搜寻指定的巢状型别。
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