anchor.diff:        final Action<int> _action = new Action<int>();
         int counter = 0;
         store.triggerOnAction(_action, (int payload) => counter = payload);
  -      store.listen(expectAsync((Store listenedStore) {
  +      store.listen(expectAsync1((Store listenedStore) {
           expect(listenedStore, equals(store));
           expect(counter, equals(17));
         }));
  
positive.code:         return true;
        }
        store.triggerOnConditionalAction(action, onAction);
        store.listen(expectAsync((Store listenedStore) {
          expect(listenedStore, equals(store));
          expect(wasTriggered, isTrue);
        }));
  
negative.code:         afterTimer = true;
        }
        store.triggerOnAction(action, asyncCallback);
        store.listen(expectAsync1((Store listenedStore) {
          expect(listenedStore, equals(store));
          expect(afterTimer, isTrue);
        }));
  