@interface GameCenterUI.ActivityFeedHeaderData : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ id;
    void /* unknown type, empty encoding */ title;
    void /* unknown type, empty encoding */ instrumentationKey;
    void /* unknown type, empty encoding */ index;
    void /* unknown type, empty encoding */ segue;
    void /* unknown type, empty encoding */ impressionMetrics;
}

@end