import { Referenceable } from "../referenceable";
import type { ITimeline, ITrack } from "../types";
import { TimeUnit } from "./timeUnit";
export declare abstract class Timeline extends Referenceable implements ITimeline {
    timeUnit?: TimeUnit;
    track?: ITrack;
    constructor(track?: ITrack, timeUnit?: TimeUnit, name?: string, color?: string, comment?: string);
    toXmlObject(): any;
    fromXmlObject(xmlObject: any): this;
}