{"ast_node_type":"variable","tokens":[{"end":78,"kind":"keyword","start":0,"text":"if"}]}
        if let DefKind::Struct | DefKind::Enum = tcx.def_kind(item.owner_id) {
    for item in tcx.hir_crate_items(()).free_items() {
            for variant in tcx.adt_def(item.owner_id).variants() {