import { DataSourceRootSummariesChangedEventArgs as DataSourceRootSummariesChangedEventArgs_internal } from "./DataSourceRootSummariesChangedEventArgs";
/**
 * Provides information about row expansion or collapse.
*/
export declare class IgxDataSourceRootSummariesChangedEventArgs {
    protected createImplementation(): DataSourceRootSummariesChangedEventArgs_internal;
    protected _implementation: any;
    /**
     * @hidden
     */
    get i(): DataSourceRootSummariesChangedEventArgs_internal;
    private onImplementationCreated;
    constructor();
    protected _provideImplementation(i: any): void;
}