{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"cx.type_of_opaque_hir_typeck(def_id).instantiate(cx,"}]}
                            cx.type_of_opaque_hir_typeck(def_id).instantiate(cx, opaque_ty.args);
                        let actual =
                        let actual = fold_regions(cx, actual, |re, _dbi| match re.kind() {