def addCallback(self, callback, *args, **kw):
        return self.addCallbacks(callback, callbackArgs=args,
                                 callbackKeywords=kw)
TODO encrypt using secret
dataset/ETHPy150Open twisted/twisted/twisted/internet/defer.py/Deferred.addCallback--crossover with--dataset/ETHPy150Open nkuttler/flaskwallet/settingsapp/helpers.py/get_setting