def advance(self, model):
        self._state = self._next_state
A flatpage can be served by the fallback middlware
dataset/ETHPy150Open projectmesa/mesa/examples/ColorPatches/color_cell.py/ColorCell.advance--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/flatpages/tests/middleware.py/FlatpageMiddlewareTests.test_fallback_flatpage