/**
 * 核心异常类
 * UpgradeRequiredException
 * code 426
 * @author ranyunlong<549510622@qq.com>
 * license MIT
 */
import { HttpException, Properties } from "./HttpException";
/**
 * @code 426
 */
export declare class UpgradeRequiredException extends HttpException {
    constructor(properties?: Properties | boolean, error?: Properties, message?: string);
}