Reorders store to follow the order indicated by new_order. Note that this function only works with unsorted stores.
an array of integers mapping the new position of each child to its old position before the re-ordering, i.e. new_order[newpos] = oldpos. It must have exactly as many items as the list store’s length.
2.2
Reorders store to follow the order indicated by new_order. Note that this function only works with unsorted stores.