This destructor would have to be called specifically before unsetting the parent class reference.

这种解构器必须在解除父类引用之前进行调用。

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Next up in Listing 2 is the @IdClass annotation, which defines the composite key class reference.

清单2中的下一个注释是 @IdClass，它定义组合键类引用。

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For details, see Ribbon Class Reference later in this topic.

有关详细信息，请参见本主题后面部分的功能区类参考。

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For details, see Ribbon Class Reference later in this topic.

有关详细信息，请参见本主题后面部分的功能区类参考。

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