public override void VisitTerminal(ITerminalNode node) { string nodeName = KaleidoscopeLexer.DefaultVocabulary.GetDisplayName(node.Symbol.Type); Graph.Nodes.Add(new Node( ) { Id = node.GetUniqueNodeId( ), Label = nodeName, Category = "Terminal" }); if (node.Parent != null) { Graph.Links.Add(new Link( ) { Source = node.Parent.GetUniqueNodeId( ), Target = node.GetUniqueNodeId( ) }); } }