def METHOD_NAME(self):
    ref = expose_blob_download(
        self.identifier,
        expiry=60,
        content_disposition='text/xml',
    )
    self.db.put(BytesIO(b'content'), meta=new_meta(key=ref.download_id))
    response = BlobDownload.get(ref.download_id).toHttpResponse()
    self.assertEqual(next(response.streaming_content), b'content')