@interface SignpostImageQueueSampleEvent : NSObject <SignpostCARenderServerFrameMetadata> @property (readonly, nonatomic) unsigned int queueID; @property (readonly, nonatomic) unsigned int surfaceID; @property (readonly, nonatomic) double serverSamplingTime; @property (readonly, nonatomic) unsigned int queueGeneration; @property (readonly, nonatomic) unsigned int frameSeed; - (id)initWithImageQueueSampleEvent:(id)a0; @end