def download_source_file(self):
        self.wrapped_set_job_state('DOWNLOADING')

        # This is the remote path.
        file_uri = self.job.source_path
        logger.debug("BaseNommer.download_source_file(): " \
                     "Attempting to download %s" % file_uri)
        # Figure out which backend to use for the protocol in the URI.
        storage = get_backend_for_uri(file_uri)
        # Create a temporary file which will be auto deleted when
        # garbage collected.
        fobj = tempfile.NamedTemporaryFile(mode='w+b', delete=True)
        # Using the correct backend, download the file to the given
        # file-like object.
        storage.download_file(file_uri, fobj)
        # flush and fsync to force writing to the file object. Doesn't always
        # happen otherwise.
        fobj.flush()
        os.fsync(fobj.fileno())

        logger.debug("BaseNommer.download_source_file(): " \
                     "Downloaded %s to %s" % (file_uri, fobj.name))

        # As soon as this fobj is garbage collected, it is closed(). Be
        # careful to continue its existence if you need it.
        return fobj
Does this cursor have the potential to return more data?
dataset/ETHPy150Open duointeractive/media-nommer/media_nommer/ec2nommerd/nommers/base_nommer.py/BaseNommer.download_source_file--crossover with--dataset/ETHPy150Open blynch/CloudMemeBackend/pymongo/cursor.py/Cursor.alive