declare namespace Ext {
    export namespace util {
        export interface CacheConfig {
            maxSize?: number;
        }

        export class Cache   {
            public count?: number;
            public clear(): void;
            public each(fn?: CallableFunction, scope?: object): void;
            public evict(key?: string, value?: object): void;
            public get(key?: string, args?: object): object;
            public miss(key?: string, args?: object): void;
        }
    }
}