def on_bring_to_front(self, touch):
        pass
A decorator that makes sure a function is run in a transaction.
dataset/ETHPy150Open kivy/kivy/kivy/uix/scatter.py/Scatter.on_bring_to_front--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/datastore.py/Transactional