{"ast_node_type":"variable","tokens":[{"end":67,"kind":"keyword","start":0,"text":"let"}]}
                    let span = ident.span.to(self.prev_token.span);
                        self.parse_ret_ty(AllowPlus::No, RecoverQPath::No, RecoverReturnSign::No)?;
                    ParenthesizedArgs { span, inputs, inputs_span, output }.into()