def expire(self, ttl=None):
        if ttl is not None:
            self.database.expire(self.key, ttl)
        else:
            self.database.persist(self.key)
A wrapper for :class:`~cola.core.bloomfilter.BloomFilter` with file persistence.
dataset/ETHPy150Open coleifer/walrus/walrus/containers.py/Container.expire--crossover with--dataset/ETHPy150Open chineking/cola/cola/core/bloomfilter/__init__.py/FileBloomFilter.__init__