title: How to assert that a list does not contain something, with FEST?
body: <p>I'm using <a href="https://code.google.com/p/fest/" rel="noreferrer">FEST</a> to write assertions in JUnit. </p>
  
  <p>It's easy to assert that a list is containing some elements:</p>
  
  <pre><code>assertThat(list).contains(2,4);
  </code></pre>
  
  <p>But how to assert that the list is not containing something? Like:</p>
  
  <pre><code>assertThat(list).doesnotContain(3); // !!! no such method
  </code></pre>