import { ServiceUnavailableHttpException } from './ServiceUnavailableHttpException.js';
/**
 * HTTP 503 while the application is in maintenance mode.
 */
export declare class MaintenanceModeException extends ServiceUnavailableHttpException {
    readonly wentDownAt: Date | undefined;
    constructor(retryAfter?: number | Date, wentDownAt?: Date, message?: string);
}
//# sourceMappingURL=MaintenanceModeException.d.ts.map