docs: def get_download(self, id):
          """
          :calls: `GET /repos/:owner/:repo/downloads/:id <http://developer.github.com/v3/repos/downloads>`_
          :param id: integer
          :rtype: :class:`github.Download.Download`
          """
          assert isinstance(id, (int, long)), id
          headers, data = self._requester.requestJsonAndCheck(
              "GET",
              self.url + "/downloads/" + str(id)
          )
          return github.Download.Download(self._requester, headers, data, completed=True)