title: Lambdaj class casting
body: <p>i have some code like this:</p>
  
  <pre><code>List&lt;ClassB&gt; back = new ArrayList&lt;ClassB&gt;();
  for( ClassA classA : getClassAs() )
  {
      if( classA instanceof ClassB )
      {
          back.add((ClassB) classA);
      }
  }
  </code></pre>
  
  <p>ClassB extends ClassA</p>
  
  <p>Is there some smart way to do this in lambdaj?
  I know there is the IsInstanceOf Matcher but i have to do the cast by 'hand'.</p>
  
  <p>thanks in advance</p>
  
  <p>mojoo</p>