def __init__(self, controller_config, sync_connection_manager=None,
               snapshot_service=None):
    super(POXController, self).__init__(
      controller_config, sync_connection_manager, snapshot_service)
    self.welcome_msg = " =====> Starting POX Controller <===== "
Controller Configs (in addition to the options defined in ControllerConfig)
dataset/ETHPy150Open ucb-sts/sts/sts/entities/controllers.py/POXController.__init__