If there is a signal queued up, send it now.

def __flush(self):
        """If there is a signal queued up, send it now."""
        if self.__args is None or self.__disconnecting:
            return False
        #self.emit(self.signal, *self.args)
        self.__sigDelayed.emit(self.__args)
        self.__args = None
        self.__timer.stop()
        self.__lastFlushTime = time.time()
        return True