public INode AddChild(char letter)
{
LightNode n = new LightNode(this, letter);
Children.Add(n);
return(n);
}
public LightNode(LightNode parent, char letter) : base(parent, letter)
{
Children = new List <LightNode>();
}
public LightWordTree(LightNode root, string filename) : base(root, filename)
{
}
