import { IgrChartGroupDescription } from "./igr-chart-group-description";
import { ChartGroupDescriptionCollection as ChartGroupDescriptionCollection_internal } from "./ChartGroupDescriptionCollection";
/**
 * Represents a collection of grouping elements that are applied to a data source or provider.
*/
export declare class IgrChartGroupDescriptionCollection {
    protected createImplementation(): ChartGroupDescriptionCollection_internal;
    protected _implementation: any;
    get i(): ChartGroupDescriptionCollection_internal;
    private onImplementationCreated;
    constructor();
    protected _provideImplementation(i: any): void;
    item(index: number, value?: IgrChartGroupDescription): IgrChartGroupDescription;
    get count(): number;
    toArray(): IgrChartGroupDescription[];
    [Symbol.iterator](): Generator<any, void, unknown>;
    findByName(name: string): any;
    add(item: IgrChartGroupDescription): boolean;
    insert(index: number, item: IgrChartGroupDescription): void;
    clear(): void;
    indexOf(item: IgrChartGroupDescription): number;
    remove(item: IgrChartGroupDescription): boolean;
    removeAt(index: number): IgrChartGroupDescription;
}