@class NSString, NSHashTable, NPTOCollectionTargetLibrary, NRDevice; @interface _NTKDeviceSyncedAlbumObserver : NSObject <NPTOCollectionTargetLibraryObserver> { NPTOCollectionTargetLibrary *_library; NSHashTable *_observers; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _lock; } @property (retain, nonatomic) NRDevice *device; @property (readonly, nonatomic) NSString *syncedAlbumName; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (void)_startObserving; - (void)dealloc; - (void)removeObserver:(id)a0; - (id)initWithDevice:(id)a0; - (void).cxx_destruct; - (void)addObserver:(id)a0; - (void)_stopObserving; - (void)collectionTargetLibraryDidUpdate:(id)a0; @end