/**
  * Substitute the giftwrapping sku for entity_id as all giftwrappings processed from the
  * feeds will have a sku. This makes looking up a giftwrapping by Eb2c SKU more
  * reasonable and allows for newly created items to be looked up after being
  * added to the collection but before the collection has been saved.
  * @param  Varien_Object $item
  * @return string
  */
 protected function _getItemId(Varien_Object $item)
 {
     return $item->getEb2cSku();
 }