Function make_from_tuple_impl

include/boost/parser/parser.hpp:2076–2081

        template<typename T, typename Tuple, int... Is>
        auto
        make_from_tuple_impl(Tuple && tup, std::integer_sequence<int, Is...>)
            -> decltype(T(parser::get((Tuple &&)tup, llong<Is>{})...))
        {
            return T(parser::get((Tuple &&)tup, llong<Is>{})...);
        }

        template<typename T, typename... Args>
        auto make_from_tuple(tuple<Args...> && tup)