title: FLEX : avoid memory leaks
body: <p>If in a component I have basic <code>Button</code> which can propagate <code>MouseEvent.CLICK</code> like this :</p>
  
  <pre><code>&lt;s:Button id="btn" click="someFunction(event)" /&gt;
  </code></pre>
  
  <p>Should I manually remove this event if I remove my component with <code>parent.removeElement(myButton)</code> function or is it automatically removed ?</p>
  
  <p>Thanks for clarification</p>