private void visitModifiedExpression(PsiExpression modifiedExpression) {
      PsiExpression expression = PsiUtil.skipParenthesizedExprDown(modifiedExpression);
      if (expression instanceof PsiReferenceExpression) {
        PsiField field = ObjectUtils.tryCast(((PsiReferenceExpression)expression).resolve(), PsiField.class);
        if (field != null && myFields.contains(field)) {
          myModified = true;
          stopWalking();
        }
      }
    }
private void visitModifiedExpression(PsiExpression modifiedExpression)