public function setJobRowClass($jobRowClass)
    {
        if (!in_array('Zend_Db_Table_Row_Abstract', class_parents($jobRowClass))) {
            throw new \InvalidArgumentException(sprintf('Job row class must be instance of Zend_Db_Table_Row_Abstract, given %s.', get_class($historyRowClass)));
        }
 
        $this->jobRowClass = $jobRowClass;
        return $this;
    }