-(void)setImageWithUrl:(NSString *)url
   postProcessingBlock:(PFImageProcess *)postProcessingBlock
         progressBlock:(PFImageLoaderProgressBlock)progressBlock
      placeholderImage:(UIImage *)placeholderImage
                fadeIn:(BOOL)fadeIn;

BlockerWrapper *wrapper = [[BlockerWrapper alloc] init];
    [wrapper setSuccessBlock:^(UIImage *img) {

        [weakSelf setImage:img];
        [weakSelf setNeedsDisplay];

        if(fadeIn) {

            [UIView beginAnimations:nil context:nil];
            [UIView setAnimationDuration:0.6];

            weakSelf.alpha = 1.0;

            [UIView commitAnimations];
        }
    }];