<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def send_stun(self, message, addr):
 """ Send a STUN message to the TURN server. """

        logger.debug('%s > %s %s', self, addr, message)
        self._send(bytes(message))