@interface _NSObserverList : NSObject {
id _owner;
id _observers;
_Atomic unsigned int _observerCount;
struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _observersLock;
}
- (id)init;
- (void)dealloc;
- (void)_receiveBox:(id)a0;
- (id)description;
- (void)removeObservation:(id)a0;
- (void).cxx_destruct;
- (id)debugDescription;
- (void)finishObserving;
@end