Class remove_reference

test/doctest.h:956–956

        struct false_type { static DOCTEST_CONSTEXPR bool value = false; };

        template <typename T> struct remove_reference { using type = T; };
        template <typename T> struct remove_reference<T&> { using type = T; };
        template <typename T> struct remove_reference<T&&> { using type = T; };