@class NSString; @interface AVDataValueTransformer : NSObject <AVAirTransportTransformationProtocol> @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (id)messageTransformerWithClass:(Class)a0; - (id)dataForMessage:(id)a0; - (id)reverseTransformerForMessageData:(id)a0; @end