def lex_count(self, low, high):
        return self.database.zlexcount(self.key, low, high)
get_storage_class returns the class for a storage backend name/path.
dataset/ETHPy150Open coleifer/walrus/walrus/containers.py/ZSet.lex_count--crossover with--dataset/ETHPy150Open pydanny/dj-libcloud/tests/test_storage.py/TestDjlibcloud.test_get_filesystem_storage