def certificateExists(self, id):
        return digest("{}cert".format(id)) in self.storage
@type location: L{iimaginary.IThing} provider.
dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/runtime/south/plugins/storage/twistedimpl/securedht/append_server.py/KademliaProtocolAppend.certificateExists--crossover with--dataset/ETHPy150Open twisted/imaginary/imaginary/events.py/DepartureEvent.__init__