To get to Rudolf's book we have to do two things.
First I messed up the key up here we should change it into a list and then give it to index.
And second we can use something called that on dismissed and here we can basically
remove all our items from our list and we have to give it direction here.
But we don't need to do anything with it.
We just have to give it our direction and then we set the stage.
And here we remove our item by using List we move at and we get that index right there.
If we now restart all implication it should work fine.
So if we know delete an item and then add new items and deletes items and add new items we don't get
any.
And cation works.
So far.