Be cautious about method overloading based on argument type when you write extension functions.
在编写扩展函数时，应谨慎处理根据实参类型进行的方法重载。
EasyMock fools the compiler about a lot of things, but it isn't quite smart enough to fool the compiler into believing that void is a legal argument type.
（EasyMock在许多方面能够 “欺骗”编译器，但是还不足以让编译器相信void是有效的参数类型）。
Doing so causes the compiler to perform argument type checking.
这样做会使编译器执行引数型别检查。
Selects a member from a list of candidates, and performs type conversion from actual argument type to formal argument type.
从候选者列表中选择一个成员，并执行实参类型到形参类型的类型转换。
As with any call, an argument might match its parameter either because the types match exactly or because there is a conversion from the argument type to the type of the parameter.
与任意函数调用一样，实参必须与它的形参匹配，它们的类型要么精确匹配，要么实参类型能够转换为形参类型。
As with any call, an argument might match its parameter either because the types match exactly or because there is a conversion from the argument type to the type of the parameter.
与任意函数调用一样，实参必须与它的形参匹配，它们的类型要么精确匹配，要么实参类型能够转换为形参类型。
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