{"ast_node_type":"variable","tokens":[{"end":54,"kind":"keyword","start":0,"text":"let"}]}
                let def_id = trait_predicate.def_id();
                let entry = types.entry(trait_predicate.self_ty()).or_default();
                if !tcx.is_default_trait(def_id) && !tcx.is_lang_item(def_id, LangItem::Sized) {