获取指向用于读写内存中的元数据的内部接口实例的指针。
Gets a pointer to an internal interface instance used to read and write metadata in memory.
但是如果一个客户端在给定对象上需要2个接口—可能一个接口来创建表且另外一个来读写数据？
But what if a client needs two interfaces on a given object-perhaps one interface for creating tables and another for reading or writing?
但是如果一个客户端在给定对象上需要2个接口—可能一个接口来创建表且另外一个来读写数据？
But what if a client needs two interfaces on a given object-perhaps one interface for creating tables and another for reading or writing?
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