Moves an item at a given index in the given parent to a new index in a new parent.
- macOS 10.7+
Index of the item to be moved.
The parent of the item to be moved.
Index in the new parent to which the item is moved.
The parent of the item after it is moved.
This method parallels the
move method of
new can be the same as
old to reorder an item within the same parent.