def get_extra_descriptor_filter(self, instance):
        return {}
Iterate over the data store.
dataset/ETHPy150Open django/django/django/db/models/fields/related.py/ForeignObject.get_extra_descriptor_filter--crossover with--dataset/ETHPy150Open ntoll/p4p2p/p4p2p/dht/storage.py/DataStore.__iter__