public BetterTreeNode <T> Add(string text)
{
var childTreeNode = this.collection_.Add(text);
var childBetterTreeNode =
new BetterTreeNode <T>(childTreeNode, childTreeNode.Nodes);
childBetterTreeNode.Parent = this;
this.absoluteChildren_.Add(childBetterTreeNode);
return(childBetterTreeNode);
}
public void Add(BetterTreeNode <T> node) => this.collection_.Add(node.impl_);