xlua修复子类中未实现的父类函数

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xlua.hotfix(ClsType, "Method", function(self, a, b)     if type(a) == "userdata" then         if a:GetType() == CS.A.UnderlyingSystemType then             print("A hotfix")         elseif a:GetType() == CS.B.UnderlyingSystemType then             print("B hotfix")         end     elseif type(a) == "number" then         print(a + b)     elseif type(a) == "string" then         print(a..b)     else         base(self):Func()     end end)

　直接修复父类的函数、并在父类的函数中判断类型来执行相应的操作。