title: Access Component Properties From Extending Component
body: <p>I have a component with a public variable declared</p>
  
  <pre><code>[Bindable]
  public var mnuSource:String;
  </code></pre>
  
  <p>When I extend this component, I can reference mnuSource (it compiles) but Runtime complains about the property not being accessible (error 1056).</p>
  
  <p>How do you modify / declare component properties so they are actually available to other components?</p>
  
  <p>Thanks</p>