def StreamEnd(self, event, loader):
Generates a processAnswer widget. Uses the args format as specified in::
dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/api/yaml_listener.py/EventHandler.StreamEnd--crossover with--dataset/ETHPy150Open nextml/NEXT/next/apps/PoolBasedTripletMDS/widgets/widget_generator.py/WidgetGenerator.processAnswer