def dequeue_taskset
      _, taskset_key = RRRSpec.redis.blpop(RRRSpec.make_key(key, 'worker_queue'), 0)
      return Taskset.new(taskset_key)
    end
def dequeue_taskset
      _, taskset_key = RRRSpec.redis.blpop(RRRSpec.make_key(key, 'worker_queue'), 0)
      return Taskset.new(taskset_key)
    end
Public: Dequeue the taskset from the taskset_queue