def start(self, *args, **kwargs):
        self.logger = self.server.logger
        self.listener = (self.config['address'],
                         self.config['port'] +
                         self.config['agent']['port_diff'] -
                         self.server.manager.config['server_number'])
        StreamServer.__init__(self, self.listener, spawn=Pool())
        self.logger.info("Agent server starting up on {}".format(self.listener))
        StreamServer.start(self, *args, **kwargs)
        Component.start(self)
dataset/ETHPy150Open simplecrypto/powerpool/powerpool/agent_server.py/AgentServer.start/operator `+` -> `-`