public function setDataToAll($key, $value = null)
    {
        if (is_array($key)) {
            foreach ($key as $k => $v) {
                $this->setDataToAll($k, $v);
            }
            return $this;
        }

        foreach ($this->getItems() as $item) {
            /** @var Aoe_Scheduler_Model_Job $item */
            $item->setDataUsingMethod($key, $value);
        }

        return $this;
    }