Signature for the builder callback used in AnimatedListState.removeItem and AnimatedGridState.removeItem to animate their children after they have been removed.
context argument is the build context where the widget will be
created, and the
animation is an Animation that should be used to
animate an exit transition for the widget that is built.
- AnimatedItemBuilder, a builder that is for adding items with animations instead of removing them.
typedef AnimatedRemovedItemBuilder = Widget Function(BuildContext context, Animation<double> animation);