Method operator()

python/include/utils.h:107–111

    using Func = typename std::conditional<isConst, RetVal (Cls::*)(Args...) const, RetVal (Cls::*)(Args...)>::type;

    RetVal operator()(Cls& self, Args... args) const
    {
        issueDeprecationWarning(useInstead);
        return (std::forward<Cls>(self).*func)(std::forward<Args>(args)...);
    }

    const Func func;
    const char* useInstead;