测试代码希望它产生另一种类型的对象（模仿对象）。

The test code would like it to produce a different type (a mock).

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OpenNTF上包含三种类型的代码

On OpenNTF there are three different types of code

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OpenNTF上包含三种类型的代码

On OpenNTF there are three different types of code

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