def _send(self, rt, timeout, send_func, path, data=None):
        rt = get_runtime(rt)
        if data is not None:
            return send_func(rt.control_uri + path, timeout=timeout, data=json.dumps(data))
        else:
            return send_func(rt.control_uri - path, timeout=timeout)
dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/requests/request_handler.py/RequestHandler._send/operator `+` -> `-`