import { EventHandler } from "../../src/render/eventhandler";
/**
 * 图像层的有序集合。
 */
export declare class ImageryLayerCollection extends EventHandler {
    static EventType: {
        layerAdded: string;
        layerRemoved: string;
        layerMoved: string;
        layerShownOrHidden: string;
    };
    private _layers;
    constructor();
    get length(): any;
    add(layer: any, index?: number): void;
    remove(layer: any, destroy?: boolean): boolean;
    removeAll(destroy?: boolean): void;
    contains(layer: any): boolean;
    indexOf(layer: any): any;
    _update(): void;
}