@class NSMutableArray; @interface TKKeyPathObserver : NSObject { id /* block */ _block; NSMutableArray *_observations; } - (id)initWithBlock:(id /* block */)a0; - (void)stopObserving; - (void)dealloc; - (void)observeValueForKeyPath:(id)a0 ofObject:(id)a1 change:(id)a2 context:(void *)a3; - (void).cxx_destruct; - (void)observe:(id)a0 keyPath:(id)a1; @end