System/Library/PrivateFrameworks/Settings.framework

Settings.ExtensionsObserver.h

Download Settings.ExtensionsObserver.h

1. _TtCs12_SwiftObject

@interface Settings.ExtensionsObserver : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ _extensions;
    void /* unknown type, empty encoding */ _extensionsLookup;
}

@end