public class LayoutStyle implements IEnum {
 
       public static const BCC_COMPACT:LayoutStyle = new LayoutStyle("bccCompact");
       public static const BCC_ISOLATED:LayoutStyle = new LayoutStyle("bccIsolated");
       public static const CIRCULAR_CUSTOM_GROUPS:LayoutStyle = new LayoutStyle("circularCustomGroups");
       public static const SINGLE_CYCLE:LayoutStyle = new LayoutStyle("singleCycle");
       private static const values:Array = [
           BCC_COMPACT,
           BCC_ISOLATED,
           CIRCULAR_CUSTOM_GROUPS,
           SINGLE_CYCLE
       ];
       private var _name:String;
 
       public function LayoutStyle(name:String) {
           this._name = name
       }
 
       public function toString():String {
           return this._name
       }
 
       public static function valueOf(s:Object):LayoutStyle {
           if (s != null) {
               for (var i:int = 0; i %lt; values.length; i++) {
                   if (values[i].toString() == s) {
                       return values[i];
                   }
               }
           }
           throw new ArgumentError("Invalid enum value: " + s);
       }
   }