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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 server_close(self):
 """ Closes the socket server and any associated resources. """

        self.log.debug("Closing the socket server connection.")
        TCPServer.server_close(self)
        self.queue_manager.close()
        self.topic_manager.close()
        if hasattr(self.authenticator, 'close'):
            self.authenticator.close()
        self.shutdown()