{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"if"}]}
            if cx.tcx.is_lang_item(def_id, LangItem::Drop) {
            let def_id = trait_predicate.trait_ref.def_id;
                // Explicitly allow `impl Drop`, a drop-guards-as-unnameable-type pattern.