How can I convert FBProfilePictureView to an UIImage?

Everything is working fine with FBProfilePictureView but I need to get that picture from FBProfilePictureView and turn it into an UIImage.

How should I do it?

I tried using this:

UIGraphicsBeginImageContext(self.profilePictureView.frame.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
self.TestPictureOutlet.image = viewImage;

But this doesnt work for my solution.