def len(self, queue_name):
        return len(self.__class__.queues.get(queue_name, []))
Extracts configs to a new dir under parent_dir and returns it
dataset/ETHPy150Open toastdriven/alligator/alligator/backends/locmem_backend.py/Client.len--crossover with--dataset/ETHPy150Open letsencrypt/letsencrypt/certbot-compatibility-test/certbot_compatibility_test/util.py/extract_configs