docs: def lists(self):
          """ :class:`Lists feed <pypump.models.feed.Lists>` with all lists
          owned by the person.
  
          Example:
              >>> for list in pump.me.lists:
              ...     print(list)
              ...
              Acquaintances
              Family
              Coworkers
              Friends
          """
          if self._lists is None:
              self._lists = Lists(self.links['lists'], pypump=self._pump)
          return self._lists