Illuminate\Queue\Console\WorkCommand::fire PHP Method

    public function fire()
    {
        if ($this->downForMaintenance() && $this->option('once')) {
            return $this->worker->sleep($this->option('sleep'));
        }
        // We'll listen to the processed and failed events so we can write information
        // to the console as jobs are processed, which will let the developer watch
        // which jobs are coming through a queue and be informed on its progress.
        $this->listenForEvents();
        $connection = $this->argument('connection') ?: $this->laravel['config']['queue.default'];
        // We need to get the right queue for the connection which is set in the queue
        // configuration file for the application. We will pull it based on the set
        // connection being run for the queue operation currently being executed.
        $queue = $this->getQueue($connection);
        $response = $this->runWorker($connection, $queue);
    }