@interface _TtCO9JetEngine19ImpressionsTracking18ImpressionableItem : _TtCs12_SwiftObject {
void /* unknown type, empty encoding */ visibleThreshold;
void /* unknown type, empty encoding */ overrideVisibleThresholdForContainer;
void /* unknown type, empty encoding */ impressionPoints;
void /* unknown type, empty encoding */ metrics;
void /* unknown type, empty encoding */ position;
void /* unknown type, empty encoding */ state;
void /* unknown type, empty encoding */ childImpressionsCalculator;
void /* unknown type, empty encoding */ isContainer;
void /* unknown type, empty encoding */ itemFrame;
}
@end