@Override
  public @Nullable Icon calcValueIcon(ValueDescriptor descriptor, EvaluationContext evaluationContext, DescriptorLabelListener listener)
    throws EvaluateException {
    if (myIconRenderer != null) {
      return myIconRenderer.calcValueIcon(descriptor, evaluationContext, listener);
    }
    return null;
  }
@Override
  public @Nullable Icon calcValueIcon(ValueDescriptor descriptor, EvaluationContext evaluationContext, DescriptorLabelListener listener)