docs: def delete_by_ids(self, ids):
          """Delete objects by ids.
  
          :param ids: list of objects ids to delete.
          :return: True if objects were deleted.  Otherwise, return False if no
                  objects were found or the delete was not successful.
          """
          try:
              self.filter(id__in=ids).delete()
              return True
          except self.model.DoesNotExist:
              return False