@protocol MRUSpatialAccessibilityObserverDelegate; @interface MRUSpatialAccessibilityObserver : NSObject @property (weak, nonatomic) id<MRUSpatialAccessibilityObserverDelegate> delegate; @property (nonatomic) BOOL isHeadTrackingEnabled; @property (nonatomic) BOOL isMonoAudioEnabled; - (id)init; - (void)dealloc; - (void).cxx_destruct; - (void)updateHeadTrackingSupported; - (void)updateMonoAudioEnabled; @end