code: protected function getFormattedItems() {
          $formattedItems = array();
          foreach ($this->items as $item) {
              $formattedItem = array();
              foreach ($this->formatters as $attributeName => $formatter) {
                  $formattedItem[$attributeName] = $this->checkAttributeFormat($attributeName, $formatter($item));
              }
              $formattedItems[] = $formattedItem;
          }
          return $formattedItems;
      }
docs: /* PRIVATE METHODS
  ***********************************************************************