declare namespace Ext {
    export namespace grid {
        export namespace selection {
            export interface SelectionConfig {
            }

            export class Selection extends Ext.Base  {
                public clone(): Ext.grid.selection.Selection;
                public eachCell(fn?: CallableFunction, scope?: object): void;
                public eachColumn(fn?: CallableFunction, scope?: object): void;
                public eachRow(fn?: CallableFunction, scope?: object): void;
            }
        }
    }
}