session facade

public class KeywordEvent extends Event
	{
		public static const KEYWORD_MESSAGE:String = 'keywordMessage';
		public function KeywordEvent()
		{
			super(KEYWORD_MESSAGE);
		}
	}
 
[Event( name = "keywordMessage", type="KeywordEvent" )]
public class ImageController extends EventDispatcher
	{
          public function getKeywordResult():void
		{
		 dispatchEvent(new KeywordEvent());
		}
        }
 
 
public class ImageSession
	{
                [Command(selector="keywordMessage")]
		public function getKeywordSearch(event:KeywordEvent):AsyncToken
		{
                    return token;
                }
        }