docs: def id_maker(obj):
      """
      Makes an ID from the object's class name and the datetime now in ISO format.
  
      :param obj: the class from which to make the ID
      :return: ID
      """
      dtfmt = '%Y%m%d-%H%M%S'
      return '%s-%s' % (obj.__class__.__name__, datetime.now().strftime(dtfmt))