code: def iter_events(self, number=-1):
          
          url = self._build_url('events', base_url=self._api)
          return self._iter(int(number), url, IssueEvent)
docs: Iterate over events associated with this issue only.
  
          :param int number: (optional), number of events to return. Default: -1
              returns all events available.
          :returns: generator of
              :class:`IssueEvent <github3.issues.event.IssueEvent>`\ s