{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"CanonicalTyVarKind::General(ty::UniverseIndex::ROOT),"}]}
                            CanonicalTyVarKind::General(ty::UniverseIndex::ROOT),
                        CanonicalizeMode::Input { .. } => CanonicalVarKind::Ty(
                        ),