/**
 * Before update handler decorator.
 *
 * @export
 * @returns {MethodDecorator}
 */
export declare function BeforeUpdate(): MethodDecorator;
/**
 * On update handler decorator.
 *
 * @export
 * @returns {MethodDecorator}
 */
export declare function OnUpdate(): MethodDecorator;
/**
 * After update handler decorator.
 *
 * @export
 * @returns {MethodDecorator}
 */
export declare function AfterUpdate(): MethodDecorator;