public function startQuery(JobConfigurationInterface $query, array $options = [])
    {
        $config = $query->toArray();
        $response = $this->connection->insertJob($config + $options);

        return new Job(
            $this->connection,
            $config['jobReference']['jobId'],
            $this->projectId,
            $this->mapper,
            $response
        );
    }