{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"CanonicalVarKind::PlaceholderConst(ty::Placeholder"}]}
                    CanonicalVarKind::PlaceholderConst(ty::Placeholder {
                CanonicalVarKind::PlaceholderConst(placeholder) => {
                        universe: reverse_universe_map[&placeholder.universe],