def delete(self):
        """
        Make sure we call the delete method of each object in the queryset so
        that safety checks and schema deletion (if requested) are executed
        even when using bulk delete.
        """
        counter, counter_dict = 0, {}
        for obj in self:
            result = obj.delete()
            if result is not None:
                current_counter, current_counter_dict = result
                counter += current_counter
                counter_dict.update(current_counter_dict)
        if counter:
            return counter, counter_dict
Make sure we call the delete method of each object in the queryset so
        that safety checks and schema deletion (if requested) are executed
        even when using bulk delete.