UICollectionViewDropItem
The data associated with an item being dropped into the collection view.
Declaration
@MainActor protocol UICollectionViewDropItem : NSObjectProtocolOverview
When handling a drop, you get instances of this class from the items property of the UICollectionViewDropCoordinator object. Use them to retrieve the data for the items being dragged and to plan any animations related to dropping the items. You do not create instances of this class yourself.