code: def get_batch_job_interface(job_time=1500):
      
      batch_job_args = get_batch_job_args(job_time)
  
      if DEFAULT_JOB_TYPE == 'slac':
          from fermipy.jobs.slac_impl import SlacInterface
          return SlacInterface(**batch_job_args)
      elif DEFAULT_JOB_TYPE == 'native':
          from fermipy.jobs.native_impl import NativeInterface
          return NativeInterface(**batch_job_args)
      return None
docs: Create a batch job interface object.
  
      Parameters
      ----------
  
      job_time : int
          Expected max length of the job, in seconds.
          This is used to select the batch queue and set the
          job_check_sleep parameter that sets how often
          we check for job completion.
  
      Returns
      -------
      job_interfact : `SysInterface`
          Object that manages interactions with batch farm