Returns whether the dragging formation animates while the drag is over this destination.
- macOS 10.7+
During the conclusion of an accepted drag, if this property is set to
true, the drag manager will animate each dragging image to their
NSDragging locations. Otherwise, the drag images are removed without any animation.
This property is inspected between prepareForDragOperation: and performDragOperation:. You should enumerate through the dragging items during performDragOperation: to set the item’s
dragging to the correct destinations.