@class NSHashTable; @interface STKDeviceLockMonitor : NSObject { struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _observersLock; NSHashTable *_observersList; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _stateLock; BOOL _deviceLocked; int _notify_token; } @property (nonatomic) BOOL isDeviceLocked; + (id)sharedInstance; - (id)init; - (void)dealloc; - (void)removeObserver:(id)a0; - (void).cxx_destruct; - (void)_updateDeviceLockState; - (void)addObserver:(id)a0; @end