docs: def delete(self, save=True):
          """
          Deletes the original, plus any thumbnails. Fails silently if there
          are errors deleting the thumbnails.
          """
          for thumb in self.field.thumbs:
              thumb_name, thumb_options = thumb
              thumb_filename = self._calc_thumb_filename(thumb_name)
              self.storage.delete(thumb_filename)
  
          super(ImageWithThumbsFieldFile, self).delete(save)