System/Library/Frameworks/Foundation.framework

_NSKeyValueObservation.h

Download _NSKeyValueObservation.h

1. NSObject

@interface _NSKeyValueObservation : NSObject {
    void /* unknown type, empty encoding */ helper;
}

- (id)init;
- (void)dealloc;
- (void)invalidate;
- (void).cxx_destruct;

@end