@class NSObject; @protocol OS_dispatch_source; @interface SignpostStreamEvent : SignpostEvent @property (nonatomic) unsigned long long _totalFrameCount; @property (retain, nonatomic) NSObject<OS_dispatch_source> *timeoutSource; @property (nonatomic) unsigned long long serialNumber; + (id)serializationTypeNumber; - (id)_dictionaryRepresentationWithIsHumanReadable:(BOOL)a0 shouldRedact:(BOOL)a1; - (id)initWithDictionary:(id)a0; - (void).cxx_destruct; - (BOOL)_hasTotalSkyLightCompositeCount; @end