Is there a better way of handling sometimes prefetched data in Django models than this?

models.py

class MyRelation(models.Model):
    """
    This simple example demonstrates the fat model which needs some related data,
    but obviously can't know [without introspecting as I'm doing here] whether or
    not it needs to eagerly fetch the data, or whether it can just enumerate
    the prefetch results.
    """
    
    def prefetched_active_users(self):
        # assumes .prefetch_related('users') has happened.
        return tuple(x for x in self.users.all() if x.is_active is True)

    def active_users(self):
        if hasattr(self, '_prefetched_objects_cache'):
            if 'users' in self._prefetched_objects_cache:
                return self.prefetched_active_users()
        return tuple(self.users.filter(is_active=True))