void makeChildren() {
      children = new ArrayList<>();

      List dims = group.getDimensions();
      for (int i = 0; i < dims.size(); i++)
        children.add(new DimensionNode(this, (Dimension) dims.get(i)));

      List vars = group.getVariables();
      for (int i = 0; i < vars.size(); i++)
        children.add(new VariableNode(this, (VariableIF) vars.get(i)));

      List groups = group.getGroups();
      for (int i = 0; i < groups.size(); i++)
        children.add(new GroupNode(this, (Group) groups.get(i)));

      if (debugTree) System.out.println("children=" + group.getFullName() + " ");
    }
 public int getIndex(TreeNode child) {
   if (debugTree) System.out.println("getIndex=" + group.getFullName() + " " + child);
   return children.indexOf(child);
 }
 GroupNode(GroupNode parent, Group group) {
   this.parent = parent;
   this.group = group;
   if (debugTree) System.out.println("new=" + group.getFullName() + " ");
   // firePropertyChangeEvent(new PropertyChangeEvent(this, "TreeNode", null, group));
 }