code: def _serve_individual_image(self, request):
      
      run = request.args.get('run')
      tag = request.args.get('tag')
      index = int(request.args.get('index'))
      sample = int(request.args.get('sample', 0))
      data = self._get_individual_image(run, tag, index, sample)
      image_type = imghdr.what(None, data)
      content_type = _IMGHDR_TO_MIMETYPE.get(image_type, _DEFAULT_IMAGE_MIMETYPE)
      return http_util.Respond(request, data, content_type)
docs: Serves an individual image.