static function _getInvoiceId($controller, $dbOrdersName, $format)
{
if (isset($controller->{$dbOrdersName}) && method_exists($controller->{$dbOrdersName}, 'getLastInvoiceId')) {
$lastId = $controller->dbCall($dbOrdersName, 'getLastInvoiceId', array(), TRUE);
$id = Helper_Cart::_composeSequenceId($format, $controller, $lastId);
return $id;
}
return NULL;
}
