def clear_limits(self):
        self.low_mark, self.high_mark = 0, None
Take a list of one time keys out of the database
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Django-1.6.10/django/db/models/sql/query.py/Query.clear_limits--crossover with--dataset/ETHPy150Open matrix-org/synapse/synapse/storage/end_to_end_keys.py/EndToEndKeyStore.claim_e2e_one_time_keys