def clear(self):
        for k in self.keys():
            del self[k]
Identfier select SHOULD NOT be sent, but this pathway is in
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/persisted/dirdbm.py/DirDBM.clear--crossover with--dataset/ETHPy150Open CollabQ/CollabQ/openid/test/test_auth_request.py/TestAuthRequestOpenID1.test_identifierSelect