public override void Remove(Component c) { children.Remove(c); }
public abstract void Remove(Component c);
public override void Add(Component c) { children.Add(c); }
public override void Remove(Component c) { Console.WriteLine("叶子节点不能删除"); }
public abstract void Add(Component c);
public override void Remove(Component c) { Console.WriteLine("Leaf Con not Remove "); }
public override void Add(Component c) { Console.WriteLine("叶子节点不能添加成员"); }
public override void Add(Component c) { Console.WriteLine("Leaf Con not Add "); }
public override void Remove(Component c) { Console.WriteLine("Cannot remove from a leaf"); }
public override void Add(Component c) { Console.WriteLine("Cannot add to a leaf"); }
public override void Remove(Component c) { list.Remove(c); }
public override void Add(Component c) { list.Add(c); }