code: def get_top_referrers(self):
          
          headers, data = self._requester.requestJsonAndCheck(
              "GET",
              self.url + "/traffic/popular/referrers"
          )
          if isinstance(data, list):
              return [
                  github.Referrer.Referrer(self._requester, headers, item, completed=True)
                  for item in data
              ]
docs: :calls: `GET /repos/:owner/:repo/traffic/popular/referrers <https://developer.github.com/v3/repos/traffic/>`_
          :rtype: :class:`list` of :class:`github.Referrer.Referrer`