code: def save_snapshot(self, state, snapshot_path):
      self.save(state, snapshot_path)
      self._post_training_snapshot_path = snapshot_path
  
imports: import abc
  from typing import List
  import torch
  from pytext.utils.file_io import PathManager
  from pytext.utils.usage import log_class_usage
label_desc: Use image node_id 4 for calling the CheckpointManager obj's underlying member method code with example usage: obj.save_snapshot(state, snapshot_path) without return types