@class NSSet, MRGroupSessionXPCConnection, NSObject, MRGroupSessionInfo; @protocol OS_dispatch_queue, MRGroupSessionDiscoveryDelegate; @interface MRGroupSessionDiscovery : NSObject @property (retain, nonatomic) MRGroupSessionXPCConnection *connection; @property (readonly, weak, nonatomic) id delegate; @property (readonly, nonatomic) NSObject *queue; @property (readonly, nonatomic) NSObject *callbackQueue; @property (retain, nonatomic) NSSet *discoveredSessions; @property (retain, nonatomic) MRGroupSessionInfo *activeSession; @property (readonly, nonatomic) struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } lock; - (void)initializeConnection; - (void).cxx_destruct; - (void)registerNotifications; - (id)debugDescription; - (id)initWithDelegate:(id)a0; - (void)activeSessionDidChange:(id)a0; - (void)discoveredSessionsDidChange:(id)a0; - (void)handleDidRestoreConnectionNotification; - (void)notifyDelegateWithActiveSession:(id)a0; - (void)notifyDelegateWithDiscoveredSessions:(id)a0; @end