def default_value(self):
    return list(super(ListProperty, self).default_value())
Returns True if given function accepts variadic positional arguments,
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/db/__init__.py/ListProperty.default_value--crossover with--dataset/ETHPy150Open flowroute/txjason/txjason/service.py/JSONRPCService._vargs