declare namespace Ext {
    export namespace data {
        export namespace identifier {
            export interface UuidConfig {
                clockSeq?: number;
                id?: string;
                salt?: number | object;
                timestamp?: number | object;
                version?: number;
            }

            export class Uuid extends Ext.data.identifier.Generator  {
                public reconfigure(config?: object): void;
            }
        }
    }
}