import { OverlayChannel } from '../types/overlay-channel';
/**
 * Overlay channels from XML API
 */
export default class OverlayChannels {
    /**
     * Returns the overlay channels state read from XML document as an object
     *
     * @param {Document} xmlDocument
     * @returns { [key:number]: OverlayChannel }
     */
    static extract(xmlDocument: Document): {
        [key: number]: OverlayChannel;
    };
}
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