使用这个方法覆写特定衍生类别的中继资料后，若再尝试覆写此相同衍生类别的中继资料，将会引发例外状况。
After metadata for a particular derived class override is established with this method, subsequent attempts to override metadata on this same derived class will raise an exception.
您可以在这个关联的类别中，提供该资料模型没有的其他中继资料资讯。
In this associated class you provide additional metadata information that is not in the data model.
中继资料 API 只会传回指定之类别的直接成员宣告，而且需要 API 用户端执行其他呼叫，以查核阶层架构和列举继承的方法。
The metadata API returns only the direct member declarations for a given class and requires the API client to make additional calls to walk the hierarchy and enumerate inherited methods.
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