code: def _findSingleMemberGroups(classDictionaries):
      
      toRemove = {}
      for classDictionaryGroup in classDictionaries:
          for classDictionary in classDictionaryGroup:
              for name, members in list(classDictionary.items()):
                  if len(members) == 1:
                      toRemove[name] = list(members)[0]
                      del classDictionary[name]
      return toRemove
docs: Find all classes that have only one member.