title: setcors / getcors for individual files
body: <p>I tried doing <a href="https://developers.google.com/storage/docs/gsutil_reference_guide#setorgetcors" rel="nofollow">setcors / getcors</a> to a single file, but I get</p>
  
  <pre><code>CommandException: URI gs://bucket/cat.png must name a bucket for the setcors command
  gsutil getcors gs://bucket.commondatastorage.googleapis.com/cat.png
  CommandException: "getcors" command must specify a bucket
  </code></pre>
  
  <p>It (setcors / getcors) works for the entire bucket, but the documentation says differently.<br/>
  Do I need to update my gsutil utility ?</p>