import { RcsbChartInterface } from "../../../RcsbSeacrh/FacetTools";
import { ReturnType } from "@rcsb/rcsb-api-tools/lib/RcsbSearch/Types/SearchEnums";
export declare namespace GroupChartEvents {
    function addBarClickCallback(chart: RcsbChartInterface, returnType: ReturnType): void;
    function addTooltipText(chart: RcsbChartInterface): void;
}