@class NSString, NWAccumulation, NSObject; @interface NWAccumulatedValue : NSObject @property (retain, nonatomic) NSObject *object; @property (retain, nonatomic) NSString *keyPath; @property (retain, nonatomic) NWAccumulation *accumulation; @property (copy, nonatomic) id /* block */ callback; - (id)snapshot; - (id)description; - (void).cxx_destruct; @end