public final class @ax-actionscript-book-PlayList-com-example-programmingas3-playlist-SortProperty
          {
                  // ------- Public Constants -------
                  
                  // These constants represent the different properties
                  // that the list of songs can be sorted by,
                  // providing a mechanism to map a "friendly" name to the actual property name
                  public static const TITLE:@ax-actionscript-book-PlayList-com-example-programmingas3-playlist-SortProperty = new @ax-actionscript-book-PlayList-com-example-programmingas3-playlist-SortProperty("title");
                  public static const ARTIST:@ax-actionscript-book-PlayList-com-example-programmingas3-playlist-SortProperty = new @ax-actionscript-book-PlayList-com-example-programmingas3-playlist-SortProperty("artist");
                  public static const YEAR:@ax-actionscript-book-PlayList-com-example-programmingas3-playlist-SortProperty = new @ax-actionscript-book-PlayList-com-example-programmingas3-playlist-SortProperty("year");
  
                  
                  // ------- Private Variables -------
                  private var _propertyName:String;
  
                  // ------- Constructor -------
                  
                  public function @ax-actionscript-book-PlayList-com-example-programmingas3-playlist-SortProperty(property:String)
                  {
                          _propertyName = property;
                  }
  
                  // ------- Public Properties -------
                  
                  public function get propertyName():String
                  {
                          return _propertyName;
                  }
          }
  }