System/Library/Frameworks/SwiftUI.framework

SwiftUI._PreviewHost.h

Download SwiftUI._PreviewHost.h

1. _TtCs12_SwiftObject

@interface SwiftUI._PreviewHost : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ objectWillChange;
    void /* unknown type, empty encoding */ environment;
    void /* unknown type, empty encoding */ focusedValues;
}

@end