def _apply_default_model_sorting(self) -> None:
        """
        Applies orders_by from model OrmarConfig (if provided), if it was not provided
        it was filled by metaclass, so it's always there and falls back to pk column
        """
        for order_by in self.model_cls.ormar_config.orders_by:
            clause = ormar.OrderAction(order_str=order_by, model_cls=self.model_cls)
            self.sorted_orders[clause] = clause.get_text_clause()

        Applies orders_by from model OrmarConfig (if provided), if it was not provided
        it was filled by metaclass, so it's always there and falls back to pk column
        
ormar/queryset/queries/query.py