title: setImage animated - NSImageView
body: <p>I'm trying to <code>setImage:</code> of a <code>NSImageView</code> using animation (Mac App):</p>
  
  <pre><code>[[_image animator] setImage:[NSImage imageNamed:@"image.png"]];
  </code></pre>
  
  <p>But the image is just changing (without some effect). I'm trying to fade it. </p>
  
  <p>Any idea how to fade two <code>NSImageView</code> in a Mac App?</p>