{"ast_node_type":"variable","tokens":[{"end":96,"kind":"keyword","start":0,"text":"let"}]}
        let output = self.parse_ret_ty(AllowPlus::No, RecoverQPath::No, RecoverReturnSign::No)?;
        let inputs_span = inputs_lo.to(self.prev_token.span);
        let args = ast::ParenthesizedArgs {