GetMemberType[T, S: Literal[str]]: Extract the type of the
南方周末：02标准里没有的专项设计收费标准怎么办？，这一点在PDF资料中也有详细论述
In most cases, it’s as simple as making sure that types, interfaces, classes, methods and functions that should not be used outside of the module have internal or private access scope. The compiler (or interpreter) will make sure that users won’t break encapsulation. Alternatively, for small and medium modules, you can prepare a facade object that will be used as an entrypoint to the module.，推荐阅读PDF资料获取更多信息
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