Alcaeus\MongoDbAdapter\Helper\WriteConcern::getWriteConcern PHP Method

    public function getWriteConcern()
    {
        if ($this->writeConcern === null) {
            $this->writeConcern = new \MongoDB\Driver\WriteConcern(1);
        }
        return ['w' => $this->writeConcern->getW(), 'wtimeout' => $this->writeConcern->getWtimeout()];
    }