class_docstr: Defines the meta data that's saved in a serialization directory and archive
  when training an AllenNLP model.
code: def from_path(cls, path: Union[PathLike, str]) -> "Meta":
      with open(path) as meta_file:
          data = json.load(meta_file)
      return cls(**data)
  
file_path: allennlp/allennlp/common/meta.py
imports: from os import PathLike
  from dataclasses import dataclass, asdict
  import json
  import logging
  from typing import Union
  from allennlp.version import VERSION
label_desc: Use image node_id 3 for calling the Meta obj's underlying member method code with example usage: obj.from_path(cls, path) and returns: cls