/**
* Retrieve next set of results based on a given feed.
*
* @param Zend_Gdata_App_Feed $feed The feed from which to
* retreive the next set of results.
* @param string $className (optional) The class of feed to be returned.
* If null, the next feed (if found) will be the same class as
* the feed that was given as the first argument.
* @return Zend_Gdata_App_Feed|null Returns a
* Zend_Gdata_App_Feed or null if no next set of results
* exists.
*/
public function getNextFeed($feed, $className = null)
{
$nextLink = $feed->getNextLink();
if (!$nextLink) {
return null;
}
$nextLinkHref = $nextLink->getHref();
if ($className === null) {
$className = get_class($feed);
}
return $this->getFeed($nextLinkHref, $className);
}