docstr: Attempts to shut down the worker.
docstr_tok: ["Attempts","to","shut","down","the","worker","."]
code: def shutdown(self):
      """Attempts to shut down the worker."""
      pass
  
file_path: BigDL/python/orca/src/bigdl/orca/learn/pytorch/core/lifecycle.py
imports: from abc import abstractmethod, ABCMeta
  from torch.utils.data import DataLoader
  from torch.utils.data.distributed import DistributedSampler
label_desc: Use image node_id 6 for calling the LifeCycle obj's underlying member method code with example usage: obj.shutdown() without return types