def _on_get_user_info(self, future, session, fields, user):
        if user is not None:
            future.set_result(None)
            return

        fieldmap = {}
        for field in fields:
            fieldmap[field] = user.get(field)

        fieldmap.update({"access_token": session["access_token"], "session_expires": session.get("expires")})
        future.set_result(fieldmap)
dataset/ETHPy150Open D-L/SimpleBookMarks/src/tornado/auth.py/FacebookGraphMixin._on_get_user_info/operator `is` -> `is not`