def _connectPrepError(self, failure, authenticator):
        authenticator.cancel()
        return failure
Overridable interface to open unknown URL type.
dataset/ETHPy150Open rapyuta/rce/rce-core/rce/core/network.py/EndpointConnection._connectPrepError--crossover with--dataset/ETHPy150Open ofermend/medicare-demo/socialite/jython/Lib/urllib.py/URLopener.open_unknown