传回具有指定基底型别的编辑器。
衍生类别的存取范围不可大于其基底型别的存取范围。
Derived classes cannot have greater accessibility than their base types.
如果衍生型别覆写了基底型别成员,基底型别成员就不会复制到衍生型别的原型。
If the derived type overrides a base type member, the base type member is not copied to the derived type's prototype.
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