{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"CanonicalVarKind::PlaceholderConst(ty::PlaceholderConst"}]}
            CanonicalVarKind::PlaceholderConst(ty::PlaceholderConst { universe, bound }) => {
            }
                let universe_mapped = universe_map(universe);