protected override void Given()
        {
            id = new CollectionIdentity("1");
            usId = new UserStoryIdentity("2");

            collectionState = new CollectionState(new List<IEvent>() { new UserStoryAdded(usId.Id) });
            collection = new MyCollection(collectionState);
        }
 protected override void Given()
 {
     identity = new CollectionIdentity("1");
     collectionState = new CollectionState(new List<IEvent>());
     collection = new MyCollection(collectionState);
 }