anchor.diff:          afterTimer = true;
         }
         store.triggerOnAction(action, asyncCallback);
  -      store.listen(expectAsync((Store listenedStore) {
  +      store.listen(expectAsync1((Store listenedStore) {
           expect(listenedStore, equals(store));
           expect(afterTimer, isTrue);
         }));
  
positive.code:       final Action<int> _action = new Action<int>();
        int counter = 0;
        store.triggerOnAction(_action, (int payload) => counter = payload);
        store.listen(expectAsync((Store listenedStore) {
          expect(listenedStore, equals(store));
          expect(counter, equals(17));
        }));
  
negative.code:     });
  
      test('should trigger with itself as the payload', () async {
        store.listen(expectAsync1((Store listenedStore) {
          expect(listenedStore, equals(store));
        }));
  
  