code: def download_image(self, image_type, image):
          
  
          url = self._getUrl("/{}/images/{}".format(image_type, image))
          response = yield from self._session().request("GET", url, auth=self._auth)
          if response.status == 404:
              raise aiohttp.web.HTTPNotFound(text="{} not found on compute".format(image))
          return response
docs: Read file of a project and download it
  
          :param image_type: Image type
          :param image: The path of the image
          :returns: A file stream