{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"ty::Adt(def,"}]}
        ty::Adt(def, args) if def.repr().transparent() && !def.is_union() => {
        ty::Adt(def, _) if def.is_box() && matches!(mode, CItemKind::Definition) => true,
            let marked_non_null = nonnull_optimization_guaranteed(tcx, *def);