!7

sclass DialogTree > DynModule {
  new Node root;

  sclass Node {
    LS text;
    new L<Node> children;
    
    toString {
      ret text == null ? "<ROOT>" : joinWithComma(text);
    }
  }
  
  JComponent visualize() {
    ret jDynTree(root, f1_getField('children));
  }
}