docs: def submit_job(self, job_config=None):
          """Submit this Streams Application Bundle (sab file) to
          its associated instance.
          
          Args:
              job_config(JobConfig): a job configuration overlay
          
          Returns:
              Job: Resulting job instance.
          """
          job_id = self._delegator._submit_bundle(self, job_config)
          return self._instance.get_job(job_id)