title: Jersey Expires Header not working
body: <p>I'm using Jersey bundle 1.11 to provide some RESTful web service.</p>
  
  <p>Each time I browse a REST resource with Chrome, I notice that there's an HTTP Header Expires set to <strong>Thu, 01 Jan 1970 01:00:00 CET</strong>.</p>
  
  <p>I tried to edit the Response adding:</p>
  
  <pre><code>return Response.ok( myObject ).expires(new Date(System.currentTimeMillis() + 3000)).build();
  </code></pre>
  
  <p>Unfortunately, this adds another HTTP Header Expires instead of replacing the old one.</p>
  
  <p>What is the problem?</p>