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UIColor+CFAdditions Category to handle UIColor.CGColor in ARC
#import <UIKit/UIKit.h>
@interface UIColor (CFAdditions)
- (CGColorRef)CGColorRetained;
#import "UIColor+CFAdditions.h"
@implementation UIColor (CFAdditions)
- (CGColorRef)CGColorRetained
return CGColorRetain(self.CGColor);
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