code: def __reversed__(self):
      end = self.end
      curr = end[PREV]
      while curr is not end:
          yield curr[KEY]
          curr = curr[PREV]
  
file_path: nibabel/nibabel/externals/oset.py
imports: from collections.abc import MutableSet
label_desc: Use image node_id 8 for calling the OrderedSet obj's underlying member method code with example usage: obj.__reversed__() without return types