@class NSMutableDictionary, MPCPlaybackEngine, NSString, NSMutableArray, NSObject; @protocol OS_dispatch_queue; @interface _MPCPlaybackEngineSessionManager : NSObject <MPCPlaybackEngineEventObserving> @property (readonly, nonatomic) NSObject<OS_dispatch_queue> *serialQueue; @property (readonly, nonatomic) NSMutableArray *sessionArchives; @property (readonly, nonatomic) NSMutableDictionary *sessionIdentifierArchiveMap; @property (readonly, weak, nonatomic) MPCPlaybackEngine *playbackEngine; @property (nonatomic, getter=isStateRestorationSupported) BOOL stateRestorationSupported; @property (retain, nonatomic) NSString *stateRestorationSessionIdentifier; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (id)archivesAtURL:(id)a0; - (void)saveSessionWithCompletion:(id /* block */)a0; - (id)initWithPlaybackEngine:(id)a0; - (void)deleteSessionWithIdentifier:(id)a0 completion:(id /* block */)a1; - (id)_playbackSessionsDirectory; - (void).cxx_destruct; @end