declare namespace Ext {
    export namespace grid {
        export namespace plugin {
            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.plugin.Abstract  {
                public getFeatureConfig(grid?: object): [];
            }
        }
    }
}