@class NSString, NSMutableArray; @interface _UIBarBackgroundPrototypingHelper : NSObject { NSMutableArray *_callbacks; } @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (void)settings:(id)a0 changedValueForKey:(id)a1; - (void).cxx_destruct; @end