UIImageView get accessibilityIdentifier

//Interface
 @property (strong, nonatomic) IBOutlet UIImageView *Image1;
 @property (strong, nonatomic) IBOutlet UIImageView *image2;

//Implementation
 image2.image = Image1.image;

UIImage *img1 = Image1.image;
 UIImage *img2 = image2.image;
 [Image1 image ].accessibilityIdentifier = @"asd";

NSString *str = img2.accessibilityIdentifier;
 // str = img1.accessibilityIdentifier;
 NSLog(@"accessibilityIdentifier String %@",str);