View difference between Paste ID: K7VQYxhq and

-
+sealed class Dumper
 {
     static public string Dump(Node root)
     {
         return root.Text + "\n" + DumpChildren( root, "" );
     }
     static private string DumpChildren(Node node, string indent)
     {
         return node.Children.Count == 0
             ? "" : node.Children.Take(node.Children.Count - 1).
                         Aggregate(string.Empty, (results, child) =>
                             results + indent + "├─" + child.Text + "\n" + DumpChildren(child, indent + "│ ") )
                     + indent + "└─" + node.Children.Last().Text + "\n" + DumpChildren(node.Children.Last(), indent + "  " );
     }
 }