declare namespace Ext {
    export namespace ux {
        export interface RowExpanderConfig {
            bodyBefore?: boolean;
            columnWidth?: number;
            expandOnDblClick?: boolean;
            expandOnEnter?: boolean;
            headerWidth?: number;
            id?: string;
            lockedTpl?: Ext.XTemplate;
            pluginId?: string;
            rowBodyTpl?: Ext.XTemplate;
            scrollIntoViewOnExpand?: boolean;
            selectRowOnExpand?: boolean;
            stateEvents?: string | [];
        }

        export class RowExpander extends Ext.grid.plugin.RowExpander  {
        }
    }
}