declare module "ui/styling/visual-state-constants" {
    /**
     * Denotes Normal state of an UIControl.
     */
    export var Normal: string;

    /**
     * Denotes Hovered state of an UIControl.
     */
    export var Hovered: string;

    /**
     * Denotes Pressed state of an UIControl.
     */
    export var Pressed: string; 
}