def create_fork(self):
        """
        :calls: `POST /gists/:id/forks <http://developer.github.com/v3/gists>`_
        :rtype: :class:`github.Gist.Gist`
        """
        headers, data = self._requester.requestJsonAndCheck(
            "POST",
            self.url + "/forks"
        )
        return Gist(self._requester, headers, data, completed=True)
:calls: `POST /gists/:id/forks <http://developer.github.com/v3/gists>`_
        :rtype: :class:`github.Gist.Gist`