def get_access_token(self, flow):
        if not self._access_token:
            return self.create_access_token(flow)
        return self._access_token
Takes parsed pagination data, spits out equivalent SQL 'limit' statement.
dataset/ETHPy150Open django-dbbackup/django-dbbackup/dbbackup/storage/dropbox_storage.py/Storage.get_access_token--crossover with--dataset/ETHPy150Open ga4gh/server/ga4gh/sqliteBackend.py/limitsSql