How to get a node based on NodeId's private index1: NonZeroUsize?

[c64zottel]

I need an unique identifier associated with the nodes and it has to be an integer of any kind <= i/u64.

So I thought I take out the index would be a good idea:
let node_id = arena.get_node_id(node).unwrap(); let uid: usize = node_id.into();

How to put it back in again? How construct a NodeId so that I can get my Node out of the Arena again?

[coderedart]

I think this issue can be closed.

With 3576901 you can just use arena.get_node_id_at(uid) to get your NodeId back from the index (usize).