class_docstr: CheckpointManager is a class abstraction to manage a training job's
  checkpoints/snapshots with different IO and storage.
docstr: Return most recent saved checkpoint path in str
  Returns: checkpoint_path (str)
docstr_tok: ["Return","most","recent","saved","checkpoint","path","in","str","Returns",":","checkpoint_path","(","str",")"]
code: def get_latest_checkpoint_path(self) -> str:
      """
      Return most recent saved checkpoint path in str
      Returns: checkpoint_path (str)
      """
      raise NotImplementedError("Not implemented in interface class")
  
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 5 for calling the PyTextCheckpointManagerInterface obj's underlying member method code with example usage: obj.get_latest_checkpoint_path() without return types