export declare class CancelledAct {
    [key: string]: any;
    static get _name(): string;
    get _name(): string;
    static is(obj: CancelledAct | any): boolean;
    readonly reason: string;
    readonly data: any;
    constructor(reason: any);
    constructor(reason?: string, data?: any);
    valueOf(): null;
    toString(): string;
}