@interface SeymourMedia.PlaybackTimelineRegionMonitor : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ eventHub;
    void /* unknown type, empty encoding */ timerProvider;
    void /* unknown type, empty encoding */ lock;
    void /* unknown type, empty encoding */ monitoredRegions;
    void /* unknown type, empty encoding */ activeRegions;
    void /* unknown type, empty encoding */ activeTimers;
}

@end