/**
* Does the element store its data in a join table (1:n)
*
* @return bool
*/
public function isJoin()
{
$params = $this->getParams();
if ($params->get('ajax_upload') && (int) $params->get('ajax_max', 4) > 1) {
return true;
} else {
return parent::isJoin();
}
}
