private void markNameDefiner(PyNamedElementContainer definer) {
      final String first_param_name = extractFirstParamName((PyElement)definer);
      if (first_param_name != null) {
        // check the targets
        for (PsiNamedElement elt : definer.getNamedElements()) {
          if (elt instanceof PyTargetExpression) handleTarget((PyTargetExpression)elt, first_param_name);
        }
      }
    }
private void markNameDefiner(PyNamedElementContainer definer)