@class GKRWLock, NSMutableArray, GKSessionInternal; @interface GKVoiceChatSessionListener : NSObject { NSMutableArray *_conferenceList; GKSessionInternal *_gkSession; GKRWLock *_rwlock; } - (id)initWithSession:(id)a0; - (void)dealloc; - (void)session:(id)a0 peer:(id)a1 didChangeState:(unsigned int)a2; - (void)removeSession:(id)a0; - (id)currentSessions; - (void)receivedNewVoiceChatOOBMessage:(id)a0 fromPeerID:(id)a1; - (void)registerNewGKVoiceChatSession:(id)a0; @end