docs: def generate_thumb(self, image):
          """
          Given a (large) image, generate a 10x10px thumbnail
          with blur effect (in order to keep the size small)
          """
          image_file = image.file
          picture = Image.open(image_file).convert('RGB')
          picture.thumbnail((10, 10))
          picture.filter(ImageFilter.GaussianBlur(radius=4))
          absolute_path = self.build_thumb_path(image)
          self.save_thumb(picture, absolute_path)