'Check an id_res message to see if it is a
checkid_immediate cancel response.
@raises SetupNeededError: if it is a checkid_immediate cancellation'

def _checkSetupNeeded(self, message):

    if message.isOpenID1():
        user_setup_url = message.getArg(OPENID1_NS, 'user_setup_url')
        if (user_setup_url is not None):
            raise SetupNeededError(user_setup_url)
