      *  <code>removeListenerHandler()</code> method and then the
      *  <code>addListenerHandler</code> method if
      *  the value of one of their listeners or sources changes.
+     *  The CreditCardValidator and DateValidator classes use this function
+     *  internally.
      *
      *  @langversion 3.0
      *  @playerversion Flash 10.1

    }

    /**
     *  Returns the Object to validate. 
     *
     *  @return The Object to validate.
     *

     *  displays an error message for a failure,
     *  or hides any existing error message for a successful validation.</p>
     *
     *  @langversion 3.0
     *  @playerversion Flash 10.1
     *  @playerversion AIR 2.5
