An example of multiple types is a view constrained by category and subcategory.
多类型示例指受类别和子类别约束的视图。
For example, you can declare the processing model across multiple types of binary information.
比如，可以为多种类型的二进制信息声明处理模型。
This method must be overridden to support collections with multiple types.
必须重写此方法才能支持具有多种类型的集合。
This method must be overridden to support collections with multiple types.
必须重写此方法才能支持具有多种类型的集合。
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