import { IFSFlagMetadata } from '../types';
export declare class FSFlagMetadata implements IFSFlagMetadata {
    campaignId: string;
    campaignName: string;
    variationGroupId: string;
    variationGroupName: string;
    variationId: string;
    variationName: string;
    isReference: boolean;
    campaignType: string;
    slug?: string | null | undefined;
    constructor(flagMetadata: Omit<IFSFlagMetadata, 'toJSON'>);
    static Empty(): IFSFlagMetadata;
}