def negate(self):
        self.children = [self._new_instance(self.children, self.connector,
                not self.negated)]
        self.connector = self.default
Store an item indexed by argument 'key'.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/utils/tree.py/Node.negate--crossover with--dataset/ETHPy150Open MapQuest/mapquest-osm-server/src/python/datastore/lrucache.py/BoundedLRUBuffer.__setitem__