def get_default_version(self, server):
    raise NotImplementedError()
Run one iteration
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/request_info.py/Dispatcher.get_default_version--crossover with--dataset/ETHPy150Open ioflo/ioflo/ioflo/aio/proto/exchanging.py/Exchange.run