System/Library/PrivateFrameworks/GameCenterFoundation.framework

_TtC20GameCenterFoundationP33_6AD903AF8B91544BE15E6B09E386A04631DefaultGKGroupActivityMessenger.h

Download _TtC20GameCenterFoundationP33_6AD903AF8B91544BE15E6B09E386A04631DefaultGKGroupActivityMessenger.h

1. _TtCs12_SwiftObject

@interface _TtC20GameCenterFoundationP33_6AD903AF8B91544BE15E6B09E386A04631DefaultGKGroupActivityMessenger : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ reliableMessenger;
    void /* unknown type, empty encoding */ unreliableMessenger;
}

@end