Resolve a path (as built by getItemPath) back to the item it points at, starting from the root. Throws when the
path no longer matches the tree's current shape - exactly like a stale reference to a real DOM element would, a
path is only valid for as long as the tree it was built from keeps the same shape.
Resolve a path (as built by getItemPath) back to the item it points at, starting from the root. Throws when the path no longer matches the tree's current shape - exactly like a stale reference to a real DOM element would, a path is only valid for as long as the tree it was built from keeps the same shape.