System/Library/PrivateFrameworks/GameCenterFoundation.framework

_TtC20GameCenterFoundationP33_6AD903AF8B91544BE15E6B09E386A04636DefaultGKGroupActivityManagerSupport.h

Download _TtC20GameCenterFoundationP33_6AD903AF8B91544BE15E6B09E386A04636DefaultGKGroupActivityManagerSupport.h

1. _TtCs12_SwiftObject

@interface _TtC20GameCenterFoundationP33_6AD903AF8B91544BE15E6B09E386A04636DefaultGKGroupActivityManagerSupport : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ sessionStateObserver;
}

@end