In some systems, the name may refer to some source code unit other than a file, such as an entry in source repository.

的在某些系统中，该名称可能指向一些源代码单元而不是文件，比如源码仓库中的某项。

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It implements the elements in the design model by writing source code, adapting existing source code, compiling, linking, and performing unit tests.

它通过编写源代码，采用已有源代码，编译，链接以及执行单元测试，实现设计模型中的元素。

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It includes an extensive set of unit tests with the source code. Developers can modify the library and use the test to verify its functionality.

它包含了一套广泛的单元测试源代码，开发者可以修改函数库源代码并使用单元测试验证其功能。

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