The IMetric interface shown in Listing 3 must be implemented and referenced in the extension point declaration.

显示在列表3中的IMetric界面必须被执行并且在这个扩展点宣言中被引用。

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The IMetric interface shown in Listing 3 must be implemented and referenced in the extension point declaration.

显示在列表3中的IMetric界面必须被执行并且在这个扩展点宣言中被引用。

youdao