def does_disk_exist(self, parameters, disk):
    raise NotImplementedError
Internal version of autoflush() with no locking.
dataset/ETHPy150Open AppScale/appscale-tools/lib/agents/base_agent.py/BaseAgent.does_disk_exist--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/logservice/logservice.py/LogsBuffer._autoflush