code: def iter_comments(self, number=-1):
          
          url = self._build_url('comments', base_url=self._api)
          return self._iter(int(number), url, IssueComment)
docs: Iterate over the comments on this issue.
  
          :param int number: (optional), number of comments to iterate over
          :returns: iterator of
              :class:`IssueComment <github3.issues.comment.IssueComment>`\ s