@class TUCallCenter, NSObject; @protocol OS_dispatch_queue; @interface CSTUPhoneCallStateMonitor : CSPhoneCallStateMonitor @property (retain, nonatomic) TUCallCenter *tuCallCenter; @property (nonatomic) unsigned long long tuPhoneCallState; @property (retain, nonatomic) NSObject<OS_dispatch_queue> *queue; + (id)sharedInstance; - (void)_stopMonitoring; - (id)init; - (void)_startMonitoringWithQueue:(id)a0; - (BOOL)firstPartyCall; - (unsigned long long)phoneCallState; - (void).cxx_destruct; - (void)_callStatusDidChangeHandler:(id)a0; - (unsigned long long)_fetchTUPhoneCallState; - (void)_registerPhoneCallStateChangeNotifier; @end