{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"for"}]}
            for variant in tcx.adt_def(item.owner_id).variants() {
        if let DefKind::Struct | DefKind::Enum = tcx.def_kind(item.owner_id) {
                if let Some((CtorKind::Fn, ctor_def_id)) = variant.ctor {