public MenuTrunk(string name, MenuTrunk parent, MenuTree tree)
 {
     this.name   = name;
     this.parent = parent;
     this.tree   = tree;
     isOn        = true;
 }
 public MenuRoot(string name, MenuTrunk parent, MenuTree tree) : base(name, parent, tree)
 {
     height = 0;
 }