@abc.abstractmethod
    def metadata(self, topics):
        pass
Returns a list of next requests to be crawled, and excludes them from internal storage.
dataset/ETHPy150Open dpkp/kafka-python/kafka/coordinator/assignors/abstract.py/AbstractPartitionAssignor.metadata--crossover with--dataset/ETHPy150Open scrapinghub/frontera/frontera/core/components.py/Queue.get_next_requests