def _list_removed(old, new):
    return [x for x in old if x not in new]
If the parent collection defines a ``cache_expires`` attribute,
dataset/ETHPy150Open saltstack/salt/salt/modules/pacman.py/_list_removed--crossover with--dataset/ETHPy150Open Kinto/kinto/kinto/views/records.py/Record._handle_cache_expires