code: def outbox(self):
          
          if self._outbox is None:
              self._outbox = Outbox(self.links['activity-outbox'], pypump=self._pump)
          return self._outbox
docs: :class:`Outbox feed <pypump.models.feed.Outbox>` with all
          :class:`activities <pypump.models.activity.Activity>` sent by the person.
  
          Example:
              >>> for activity in pump.me.outbox[:2]:
              ...     print(activity)
              ...
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