{"ast_node_type":"variable","tokens":[{"end":19,"kind":"keyword","start":0,"text":"let"}]}
            let _ =
            visitor.span = tcx.hir_expect_item(def_id).expect_impl().of_trait.unwrap().path.span;
                visitor.visit_def_id(trait_ref.def_id, "trait", &trait_ref.print_only_trait_path());