def __init__(self, service):
        self.service = service
        self.logger = logging.getLogger('%s.%s' % (service.name, self.name))
        self.threads = []
Build a linked list and validate it's correctness given an array of
dataset/ETHPy150Open facebook/sparts/sparts/vtask.py/VTask.__init__--crossover with--dataset/ETHPy150Open appnexus/schema-tool/schematool/util/chain.py/ChainUtil.__build_and_validate_linked_list