protected function enqueue($jobName, $params, $method, $unique)
    {
        $worker = $this->getJob($jobName);

        $unique = $this
            ->uniqueJobIdentifierGenerator
            ->generateUniqueKey($jobName, $params, $unique, $method);

        return $worker
            ? $this->doEnqueue($worker, $params, $method, $unique)
            : false;
    }