NEO/py switched from UUID to 4-byte NodeID long time ago in
nexedi/neoppod@23fad3af and has a TODO to
rename uuid to nid.

NEO protocol also talks about renaming uuid to nid:

    note: the uuid variable should be renamed into nid
    https://neo.nexedi.com/P-NEO-Protocol.Specification.2019?portal_skin=CI_slideshow#/9/5

NEO/go can do the rename now.