docs: def save(self, *args, **kwargs):
          """ intercepts changes to is_default """
          ignore_default_check = kwargs.pop('ignore_default_check', False)
          # if making this status the default one
          if self.is_default != self._current_is_default and self.is_default is True:
              # uncheck other default statuses first
              for status in self.__class__.objects.filter(is_default=True):
                  status.is_default = False
                  status.save(ignore_default_check=True)
  
          super(Status, self).save(*args, **kwargs)
  
          # in case there are no default statuses, make this one as the default one
          if self.__class__.objects.filter(is_default=True).count() == 0 and not ignore_default_check:
              self.is_default = True
              self.save()
          # update __current_status
          self._current_is_default = self.is_default