def _many_to_many(self):
        try:
            self._m2m_cache
        except __HOLE__:
            self._fill_m2m_cache()
        return list(self._m2m_cache)
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Django-1.6.10/django/db/models/options.py/Options._many_to_many