declare namespace Ext {
    export namespace state {
        export interface ManagerConfig {
        }

        export class Manager extends Ext.Base  {
            public clear(key?: string): void;
            public get(key?: string, defaultValue?: object): object;
            public getProvider(): Ext.state.Provider;
            public set(key?: string, value?: object): void;
            public setProvider(stateProvider?: Ext.state.Provider): void;
        }
    }
}