code: def checkpoint(self):
      print("checkpointing")
      return submitit.helpers.DelayedSubmission(self)
  
file_path: submitit/docs/examples/torch_distributed.py
imports: import os
  import sys
  import time
  import torch
  import submitit
label_desc: Use image node_id 2 for calling the Task obj's underlying member method code with example usage: obj.checkpoint() and returns: submitit