def desc(self) -> OrderAction:
        """
        works as sql `column desc`

        :return: OrderGroup for operator
        :rtype: ormar.queryset.actions.OrderGroup
        """
        return OrderAction(
            order_str="-" + self._access_chain, model_cls=self._source_model
        )

        works as sql `column desc`

        :return: OrderGroup for operator
        :rtype: ormar.queryset.actions.OrderGroup
        
ormar/queryset/field_accessor.py