@delegate_manager
    def _mptt_update(self, qs=None, **items):
        if qs is None:
            qs = self
        return qs.update(**self._translate_lookups(**items))
Like ``self.update()``, but translates name-agnostic MPTT fields.
dataset/ETHPy150Open django-mptt/django-mptt/mptt/managers.py/TreeManager._mptt_update