<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def stream_close(self, listenKey):
 """Close out a user data stream. https://github.com/binance-exchange/binance-official-api-docs/blob/master/rest-api.md#close-user-data-stream-user_stream :param listenKey: required :type listenKey: str :returns: API response .. code-block:: python {} :raises: BinanceRequestException, BinanceAPIException """

        params = {
            'listenKey': listenKey
        }
        return self._delete('userDataStream', False, data=params)