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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 timeout_keep_alive_handler(self):
 """ Called on a keep-alive connection if no new data is received after a short delay. """

        if not self.transport.is_closing():
            event = h11.ConnectionClosed()
            self.conn.send(event)
            self.transport.close()