This is a private message handler method.
        It is the message handler for String data messages that will be
        printed to the console.
        :param data:  message

        :returns: None - message is sent to console

async def _string_data(self, data):
        """
        This is a private message handler method.
        It is the message handler for String data messages that will be
        printed to the console.
        :param data:  message

        :returns: None - message is sent to console
        """
        reply = ''
        data = data[1:-1]
        for x in data:
            reply_data = x
            if reply_data:
                reply += chr(reply_data)
        if self.log_output:
            logging.info(reply)
        else:
            print(reply)