@protocol NACancelable; @interface HUEffectiveProgressObserver : NSObject @property (readonly, copy, nonatomic) id /* block */ observerBlock; @property (readonly, nonatomic) double targetEffectiveProgress; @property (retain, nonatomic) id<NACancelable> timerCancellationToken; - (void).cxx_destruct; - (id)initWithTargetEffectiveProgress:(double)a0 observerBlock:(id /* block */)a1; @end