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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _end_flusher_loop(self):
 """ Let flusher_loop coroutine quit - useful when disconnecting. """

        if not self.is_connected or self.is_connecting or self.io.closed():
            if self._flush_queue is not None and self._flush_queue.empty():
                self._flush_pending(check_connected=False)
            yield tornado.gen.moment