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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 on_exchange_declareok(self, unused_frame):
 """ Invoked by pika when RabbitMQ has finished the Exchange.Declare RPC command. :param pika.Frame.Method unused_frame: Exchange.DeclareOk response frame """

        self._logger.debug('Exchange declared')
        self.setup_queue(self._queue)