{"ast_node_type":"variable","tokens":[{"end":45,"kind":"keyword","start":0,"text":"if"}]}
    if let Some(def_id) = def_id.as_local() {
fn inhabited_predicate_adt(tcx: TyCtxt<'_>, def_id: DefId) -> InhabitedPredicate<'_> {
        if matches!(tcx.representability(def_id), ty::Representability::Infinite(_)) {