public static void CreateEmptyLayer(TreeNode contextTn, IEnumerable<IMaxNode> contextNodes)
   {
      CreateNewLayerCommand createCmd = new CreateNewLayerCommand();
      createCmd.Execute();

      MoveCreatedLayer(contextTn, createCmd.CreatedLayer);
   }
 public static void AddSelectionToNewLayer(TreeNode contextTn, IEnumerable<IMaxNode> contextNodes)
 {
    CreateNewLayerCommand createCmd = new CreateNewLayerCommand(contextNodes);
    createCmd.Execute();
 }