private static void replaceUsages(PsiLocalVariable target) {
      Collection<PsiReference> usages = ReferencesSearch.search(target).findAll();
      for (PsiReference usage : usages) {
        PsiElement element = usage.getElement();
        if (element.isValid() && element instanceof PsiExpression) {
          PsiMethodCallExpression call = ExpressionUtils.getCallForQualifier((PsiExpression)element);
          if (call != null && "toString".equals(call.getMethodExpression().getReferenceName())) {
            new CommentTracker().replaceAndRestoreComments(call, element);
          }
        }
      }
    }
private static void replaceUsages(PsiLocalVariable target)