import * as React from 'react';
export declare class DetailsListCustomGroupHeadersExample extends React.Component<{}, {}> {
    private _items;
    private _groups;
    constructor(props: {});
    render(): JSX.Element;
    private _onRenderDetailsHeader;
    private _onRenderGroupHeader;
    private _onRenderGroupFooter;
    private _getGroupTotalRowHeight;
    private _getGroupHeight;
    private _onToggleSelectGroup;
    private _onToggleCollapse;
}