/// <summary>
 /// creates the action with size and duration. See CCGridAction.initWithSize().
 /// </summary>
 /// <seealso cref="CCGridAction"/>
 public static CCTiledGrid3DAction actionWithSize(ccGridSize gridSize, float duration)
 {
     CCTiledGrid3DAction action = new CCTiledGrid3DAction();
     action.initWithSize(gridSize, duration);
     return (action);
 }