{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"this.lower_fn_decl(fdec,"}]}
                            this.lower_fn_decl(fdec, i.id, sig.span, FnDeclKind::ExternFn, None),
                            // Disallow `impl Trait` in foreign items.
                            this.lower_fn_params_to_idents(fdec),