docs: def shares(self):
          """ A :class:`Feed <pypump.models.feed.Feed>`
          of the people who've shared the object.
  
          Example:
              >>> for person in mynote.shares:
              ...     print(person.webfinger)
              ...
              pypumptest1@pumpity.net
              pypumptest2@pumpyourself.com
          """
  
          endpoint = self.links["shares"]
          if self._shares is None:
              self._shares = Feed(endpoint, pypump=self._pump)
          return self._shares