def unhandled_command(self, message):
    message.reply('Unknown command')
This attribute points to default form.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/webapp/xmpp_handlers.py/CommandHandlerMixin.unhandled_command--crossover with--dataset/ETHPy150Open lorien/grab/grab/document.py/FormExtension.form