private boolean setFullValueEvaluator(Renderer renderer) {
            if (renderer instanceof FullValueEvaluatorProvider) {
              XFullValueEvaluator evaluator = ((FullValueEvaluatorProvider)renderer).getFullValueEvaluator(myEvaluationContext, myValueDescriptor);
              if (evaluator != null) {
                node.setFullValueEvaluator(evaluator);
                return true;
              }
            }
            return false;
          }
private boolean setFullValueEvaluator(Renderer renderer)