def unhandled_command(self, message):
    message.reply('Unknown command')
callback when new workflow is slotted
dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/ext/webapp/xmpp_handlers.py/CommandHandlerMixin.unhandled_command--crossover with--dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.main/src/openmdao/main/driver.py/Driver._workflow_changed