import { IDataSourceInfo, IItemsExtender } from '../../../../core/utils/_fieldListProvider';
import { PathRequest } from '../../../../widgets/common/pathRequest';
import { IDataMemberInfo } from '../../../../widgets/utils';
export declare class FederationDataSourceItemsExtender implements IItemsExtender {
    private _rootItems;
    constructor(_rootItems: ko.ObservableArray<IDataSourceInfo>);
    afterItemsFilled(request: PathRequest, items: IDataMemberInfo[]): void;
    beforeItemsFilled(request: PathRequest, items: IDataMemberInfo[]): boolean;
}