 
 /**
  *  The MessageAckEvent class is used to propagate acknowledge messages within the messaging system.
+ *  
+ *  @langversion 3.0
+ *  @playerversion Flash 9
+ *  @playerversion AIR 1.1
+ *  @productversion BlazeDS 4
+ *  @productversion LCDS 3 
  */
 public class MessageAckEvent extends MessageEvent
 {    

     *  Clones the MessageAckEvent.
     *
     *  @return Copy of this MessageAckEvent.
     */
    override public function clone():Event
    {

     *  Returns a string representation of the MessageAckEvent.
     *
     *  @return String representation of the MessageAckEvent.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion BlazeDS 4
     *  @productversion LCDS 3 
     */
    override public function toString():String
    {
