136 if constexpr (std::is_base_of_v<std::string, std::remove_reference_t<decltype(parm)>>) {
137 return std::forward<T>(parm);
141 else if constexpr (std::is_array_v<std::remove_reference_t<decltype(parm)>>) {
142 return std::forward<T>(parm);
146 else if constexpr (std::is_same_v<std::remove_reference_t<decltype(parm)>,
148 std::is_same_v<std::remove_reference_t<decltype(parm)>,
char*>) {
149 return std::forward<T>(parm);
153 else if constexpr (std::is_integral_v<std::remove_reference_t<decltype(parm)>> ||
154 std::is_floating_point_v<std::remove_reference_t<decltype(parm)>>) {
160 static_assert(std::is_base_of_v<
void, decltype(parm)>);
161 return std::string();