def done(self, form_list, **kwargs):
        raise NotImplementedError("Your %s class has not defined a done() "
            "method, which is required." % self.__class__.__name__)
This method must be overridden by a subclass to process to form data
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/formtools/wizard/views.py/WizardView.done