declare namespace Ext {
    export namespace grid {
        export namespace locking {
            export interface LockableConfig {
                layout?: object;
                lockedGridConfig?: object;
                lockedViewConfig?: object;
                normalGridConfig?: object;
                normalViewConfig?: object;
                split?: boolean | object;
                stateEvents?: string[];
                subGridXType?: string;
                syncRowHeight?: boolean;
            }

            export class Lockable extends Ext.Base  {
                public syncRowHeights(): void;
            }
        }
    }
}