import { IModelSerializer, ISerializationInfoArray } from '@devexpress/analytics-core/analytics-utils';
export declare class ExtensionModel {
    getInfo(): ISerializationInfoArray;
    constructor(model: any, serializer?: IModelSerializer);
    key: ko.Observable<string> | ko.Computed<string>;
    value: ko.Observable<string> | ko.Computed<string>;
}