code: def start_worker(which_worker, config={}):
      '''Start some worker class.
  
      :param str which_worker: name of the worker
      :param dict config: ``rejester`` config block
  
      '''
      if which_worker == 'multi_worker':
          cls = MultiWorker
      elif which_worker == 'fork_worker':
          cls = ForkWorker
      else:
          # Don't complain too hard, just fall back
          cls = ForkWorker
      return run_worker(cls, configf start_worker(which_worker, config={}):
      '''Start some worker class.
  
      :param str which_worker: name of the worker
      :param dict config: ``rejester`` config block
  
      '''
      if which_worker == 'multi_worker':
          cls = MultiWorker
      elif which_worker == 'fork_worker':
          cls = ForkWorker
      else:
          # Don't complain too hard, just fall back
          cls = ForkWorker
      return run_worker(cls, config)
docs: Start some worker class.
  
      :param str which_worker: name of the worker
      :param dict config: ``rejester`` config block