declare type LabelRefPayload = {
    existing: boolean;
    id: string;
};
export declare type Payload = {
    labelRef: LabelRefPayload;
    dataRowId: string;
    projectId: string;
    templateId?: string;
    benchmarkId?: string;
};
export declare class LabelingTaskId {
    private payload;
    constructor(payload: Payload);
    get labelRef(): LabelRefPayload;
    get dataRowId(): string;
    get projectId(): string;
    get templateId(): string | null;
    get benchmarkId(): string | null;
    encode(): string;
    static decode(input: string): LabelingTaskId | undefined;
    private static isPayload;
    static isValidLegacyPayload(input: string): boolean;
}
export {};