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ARC Leads to Large Abandoned Memory
- (NSString *)imagesDirectory {
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *folderDirectory = [documentsDirectory stringByAppendingPathComponent:@"Images"];
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    [fileManager createDirectoryAtPath:folderDirectory withIntermediateDirectories:YES attributes:nil error:nil];
    fileManager = nil;
    return folderDirectory;

UIImageView *transitionImage = [[UIImageView alloc] initWithImage:thumbnail];
        transitionImage.center = primeReviewButton.center;
        transitionImage.bounds = primeReviewButton.bounds;
        transitionImage.transform = orientationTransform;
        transitionImage.alpha = 0.0;

        [self.cameraView insertSubview:transitionImage belowSubview:photoNumberBadge];

        [UIView animateWithDuration:1 delay:0 options:UIViewAnimationOptionAllowUserInteraction
                         animations:^{
                             transitionImage.alpha = 1;
                         }
                         completion:^(BOOL finished){
                             transitionImage.alpha = 0;
                             transitionImage.image = nil;
                             [transitionImage removeFromSuperview];
}];