Function get_error

include/sol/stack.hpp:365–371

		namespace stack_detail {
			inline error get_error(lua_State* L, int target) {
				auto maybe_exc = stack::check_get<error&>(L, target);
				if (maybe_exc.has_value()) {
					return maybe_exc.value();
				}
				return error(detail::direct_error, stack::get<std::string>(L, target));
			}

			inline detail::error_exception get_error_exception(lua_State* L, int target) {
				auto maybe_exc = stack::check_get<detail::error_exception&>(L, target);