@class NSHashTable, NSString, NSArray, NSPredicate, NSSet, BSAtomicFlag, NSDictionary, NSUUID, NSObject, _EXQueryController; @protocol OS_dispatch_queue, PRPosterExtensionProviderObserver; @interface PRPosterExtensionDefaultDataSource : NSObject <_EXQueryControllerDelegate, PRPosterExtensionProvider> { NSObject<OS_dispatch_queue> *_queue; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _lock; NSArray *_queue_queries; _EXQueryController *_queue_queryController; NSArray *_lock_knownPosterExtensions; NSDictionary *_lock_defaultInstanceByProvider; NSHashTable *_lock_instantiatedPosterExtensions; BOOL _queue_started; BSAtomicFlag *_invalidatedFlag; id<PRPosterExtensionProviderObserver> _queue_delegate; NSPredicate *_queue_rolePredicate; NSHashTable *_queue_observers; NSUUID *_defaultInstanceIdentifier; } @property (retain, nonatomic) NSArray *knownPosterExtensions; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; @property (retain, nonatomic) NSPredicate *predicate; @property (retain, nonatomic) NSSet *supportedRoles; @property (readonly, nonatomic) NSDictionary *defaultInstanceByProvider; + (id)extensionKitQuery; - (void)_queue_start; - (id)init; - (void)removeObserver:(id)a0; - (void)start; - (void)invalidate; - (void).cxx_destruct; - (void)cancel; - (void)addObserver:(id)a0; - (void)_invalidateDataSource:(BOOL)a0 invalidateInstantiatedPosterExtensions:(BOOL)a1 invalidateDefaultPosterExtensions:(BOOL)a2 restartIfAlreadyStarted:(BOOL)a3; - (void)_lock_invalidateDefaultPosterExtensions; - (void)_lock_invalidateInstantiatedPosterExtensions; - (void)_queue_executeQuery; - (void)_queue_invalidateDataSource:(BOOL)a0 invalidateInstantiatedPosterExtensions:(BOOL)a1 invalidateDefaultPosterExtensions:(BOOL)a2 restartIfAlreadyStarted:(BOOL)a3; - (void)_queue_notifyDataStoreOfUpdatedExtensions:(id)a0; - (void)_queue_teardownQueryController; - (id)defaultInstanceByProvider; - (id)defaultInstanceOfProvider:(id)a0 error:(out id *)a1; - (id)initWithDefaultInstanceIdentifier:(id)a0; - (id)instantiateNewInstanceOfProvider:(id)a0 error:(out id *)a1; - (id)knownPosterExtensions; - (void)queryControllerDidUpdate:(id)a0 resultDifference:(id)a1; - (void)teardownRunningExtensions; @end