def __call__(self, context):
    context.counters.increment(self.counter_name, self.delta)
Leave multicast group, return Deferred of success.
dataset/ETHPy150Open livid/v2ex/mapreduce/operation/counters.py/Increment.__call__--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/internet/iocpreactor/udp.py/MulticastMixin.leaveGroup