System/Library/PrivateFrameworks/PaperKit.framework

_TtC8PaperKitP33_5D2B53DF046BEBCFF2932A232E43178E22PPKZeroCallbackCounter.h

Download _TtC8PaperKitP33_5D2B53DF046BEBCFF2932A232E43178E22PPKZeroCallbackCounter.h

1. _TtCs12_SwiftObject

@interface _TtC8PaperKitP33_5D2B53DF046BEBCFF2932A232E43178E22PPKZeroCallbackCounter : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ counter;
    void /* unknown type, empty encoding */ lock;
    void /* unknown type, empty encoding */ zeroCallback;
}

@end