import { IPSDEGridColumn } from './ipsdegrid-column';
import { IPSDEGridGroupColumn } from './ipsdegrid-group-column';
import { PSDEGridColumnImpl } from './psdegrid-column-impl';
export declare class PSDEGridGroupColumnImpl extends PSDEGridColumnImpl implements IPSDEGridGroupColumn {
    protected psdegridcolumns: IPSDEGridColumn[] | null;
    getPSDEGridColumns(): IPSDEGridColumn[] | null;
    get psDEGridColumns(): IPSDEGridColumn[] | null;
    findPSDEGridColumn(objKey: any): IPSDEGridColumn | null;
    get cls(): string;
    instanceof(cls: string): boolean;
}
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