code: def save_checkpoint(self, state, checkpoint_path):
      self.save(state, checkpoint_path)
      self._saved_paths.append(checkpoint_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 3 for calling the CheckpointManager obj's underlying member method code with example usage: obj.save_checkpoint(state, checkpoint_path) without return types