declare namespace Ext {
    export namespace state {
        export interface ProviderConfig {
            listeners?: object;
            prefix?: string;
        }

        export class Provider extends Ext.Base  {
            public clear(name?: string): void;
            public decodeValue(value?: string): object;
            public encodeValue(value?: object): string;
            public get(name?: string, defaultValue?: object): object;
            public set(name?: string, value?: object): void;
        }
    }
}