def _call_gateway(self, resp):
        raise NotImplementedError()
Updates an access token, given the refresh token.
dataset/ETHPy150Open openstack/storlets/Engine/swift/storlet_middleware/storlet_handler.py/BaseStorletHandler._call_gateway--crossover with--dataset/ETHPy150Open joaoqalves/web2py-oauth2/modules/oauth/storage/__init__.py/MongoStorage.refresh_access_token