144 if constexpr (std::is_base_of_v<std::string,
145 std::remove_reference_t<decltype(parm)>>) {
146 return std::forward<T>(parm);
150 }
else if constexpr (std::is_array_v<
151 std::remove_reference_t<decltype(parm)>>) {
152 return std::forward<T>(parm);
156 }
else if constexpr (std::is_same_v<std::remove_reference_t<decltype(parm)>,
158 std::is_same_v<std::remove_reference_t<decltype(parm)>,
160 return std::forward<T>(parm);
164 }
else if constexpr (std::is_integral_v<std::remove_reference_t<decltype(parm)>> ||
165 std::is_floating_point_v<
166 std::remove_reference_t<decltype(parm)>>) {
172 static_assert(std::is_base_of_v<
void, decltype(parm)>);
173 return std::string();