/**
 *
 *  Represents an authentication token associated with a user, including its creation time and
 *  validity period.
 *  The token value is stored in encrypted form.
 *  /
 */
export declare class AuthenticationToken {
    /**
     *
     *  The encrypted token string.
     */
    token: string | undefined;
    /**
     *
     *  The epoch-millisecond timestamp at which the token became valid.
     */
    creationTime: number;
    /**
     *
     *  The duration in seconds for which the token remains valid after creation.
     */
    validity: number;
    /**
     *
     *  The epoch-millisecond timestamp of a hard deletion, if the token has been marked for deletion.
     */
    deletionDate: number | undefined;
    constructor(partial: Partial<AuthenticationToken> & Pick<AuthenticationToken, "creationTime" | "validity">);
    toJSON(): object;
    static fromJSON(json: any, ignoreUnknownKeys?: boolean, path?: Array<string>): AuthenticationToken;
}