public override void Add(Developer d)
{
Console.WriteLine("Cannot add to a leaf");
}
public override void Remove(Developer developer)
{
children.Remove(developer);
}
public override void Add(Developer developer)
{
children.Add(developer);
}
public abstract void Remove(Developer d);
public abstract void Add(Developer d);
public override void Remove(Developer d)
{
Console.WriteLine("Cannot remove from a leaf");
}