docs: def get_gist(self, id):
          """
          :calls: `GET /gists/:id <http://developer.github.com/v3/gists>`_
          :param id: string
          :rtype: :class:`github.Gist.Gist`
          """
          assert isinstance(id, (str, unicode)), id
          headers, data = self.__requester.requestJsonAndCheck(
              "GET",
              "/gists/" + id
          )
          return github.Gist.Gist(self.__requester, headers, data, completed=True)