public IVisualEdge CreateEdge(IVisual root, IVisual leaf, object data)
{
IVisualEdge result = new VisualEdge <string>(data.ToString(), root, leaf);
return(result);
}
public IVisualEdge CreateEdge(object data)
{
IVisualEdge result = new VisualEdge <string>(data.ToString());
return(result);
}