def supportsCheckerFactory(self, factory):
        for interface in factory.credentialInterfaces:
            if self.supportsInterface(interface):
                return True
        return False
Returns whether a checker factory will provide at least one of
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/cred/strcred.py/AuthOptionMixin.supportsCheckerFactory