code: def worker(workers):
      
      logging.info(
          "The 'superset worker' command is deprecated. Please use the 'celery "
          "worker' command instead.")
      if workers:
          celery_app.conf.update(CELERYD_CONCURRENCY=workers)
      elif config.get('SUPERSET_CELERY_WORKERS'):
          celery_app.conf.update(
              CELERYD_CONCURRENCY=config.get('SUPERSET_CELERY_WORKERS'))
  
      worker = celery_app.Worker(optimization='fair')
      worker.start()
docs: Starts a Superset worker for async SQL query execution.