code: public function findById($intId, $arrAttrOnly = array())
      {
          if (!$intId) {
              return null;
          }
          $objItems = $this->getItemsWithId(array($intId), $arrAttrOnly);
          if ($objItems && $objItems->first()) {
              return $objItems->getItem();
          }
          return null;
      }
docs: {@inheritdoc}