/**
* Insert Item into Google Content
*
* @param Mage_GoogleShopping_Model_Item $item
* @return Mage_GoogleShopping_Model_Service_Item
*/
public function insert($item)
{
$service = $this->getService();
$entry = $service->newEntry();
$item->getType()->convertProductToEntry($item->getProduct(), $entry);
$entry = $service->insertItem($entry);
$published = $this->convertContentDateToTimestamp($entry->getPublished()->getText());
$item->setGcontentItemId($entry->getId())->setPublished($published);
$expires = $this->_getAttributeValue($entry, 'expiration_date');
if ($expires) {
$expires = $this->convertContentDateToTimestamp($expires);
$item->setExpires($expires);
}
return $this;
}