This class contains three important methods: add , get_all , and delete .

这个类包含三个重要的方法：add 、get _ all和delete 。

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The BatchFiles class has the three primary methods: add , get_all , and delete .

batchfiles类有三个主要方法：add 、get _ all和delete 。

youdao

The BatchFiles class has the three primary methods: add , get_all , and delete .

batchfiles类有三个主要方法：add 、get _ all和delete 。

youdao