def submit_job(self, job_config=None):
job_id = self._delegator._submit_bundle(self, job_config)<EOL>return self._instance.get_job(job_id)<EOL>
Submit this Streams Application Bundle (sab file) to
        its associated instance.

        Args:
            job_config(JobConfig): a job configuration overlay

        Returns:
            Job: Resulting job instance.