code: def get_thumbnail_name(self, thumbnail_options, transparent=False,
                             high_resolution=False):
          
          path, filename = os.path.split(self.name)
  
          basedir = self.thumbnail_basedir
          subdir = self.thumbnail_subdir
  
          return os.path.join(basedir, path, subdir, filename)
docs: A version of ``Thumbnailer.get_thumbnail_name`` that returns the original
          filename to resize.