Phive\Queue\MongoQueue::pop PHP Method

    public function pop()
    {
        $result = $this->getCollection()->findAndModify(['eta' => ['$lte' => time()]], [], ['item' => 1, '_id' => 0], ['remove' => 1, 'sort' => ['eta' => 1]]);
        if ($result && array_key_exists('item', $result)) {
            return $result['item'];
        }
        throw new NoItemAvailableException($this);
    }