System/Library/PrivateFrameworks/PreviewsOSSupport.framework

PreviewsOSSupport.PreviewAssertionManager.h

Download PreviewsOSSupport.PreviewAssertionManager.h

1. _TtCs12_SwiftObject

@interface PreviewsOSSupport.PreviewAssertionManager : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ storage;
}

@end