declare namespace Ext {
    export namespace mixin {
        export interface AccessibleConfig {
            ariaAttributes?: object;
            ariaDescribedBy?: string;
            ariaLabel?: string;
            ariaLabelledBy?: string;
        }

        export class Accessible extends Ext.Mixin  {
            public ariaRole?: string;
            public getAriaAttributes(): void;
            public setAriaAttributes(): void;
        }
    }
}