@class NSHashTable, NSMutableDictionary, NSObject; @protocol OS_dispatch_queue; @interface SKUIToggleStateCenter : NSObject { NSObject<OS_dispatch_queue> *_accessQueue; NSMutableDictionary *_itemStates; NSObject<OS_dispatch_queue> *_observerQueue; NSHashTable *_observers; } + (id)defaultCenter; - (id)init; - (void)dealloc; - (void)removeObserver:(id)a0; - (id)itemForIdentifier:(id)a0; - (BOOL)updateItem:(id)a0; - (void)clearAll; - (void).cxx_destruct; - (void)addObserver:(id)a0; - (void)_notifyObserversOfStateChanges:(id)a0; - (void)_accountStoreChangeNotification:(id)a0; @end