@Override
  public PsiElement getChildValueExpression(DebuggerTreeNode node, DebuggerContext context) throws EvaluateException {
    NodeRenderer renderer = node.getParent().getDescriptor().getUserData(GROOVY_REF_DELEGATE_RENDERER);
    return renderer != null ? renderer.getChildValueExpression(node, context) : null;
  }
@Override
  public PsiElement getChildValueExpression(DebuggerTreeNode node, DebuggerContext context)