@class NSString; @interface AVKeyValueChange : NSObject @property (readonly, nonatomic) id value; @property (readonly, nonatomic) id oldValue; @property (readonly, nonatomic) NSString *keyPath; @property (readonly, nonatomic) id observationToken; - (id)initWithValue:(id)a0 oldValue:(id)a1 keyPath:(id)a2 observationToken:(id)a3; - (void).cxx_destruct; @end