class_docstr: Dataset based on the official ISO-639 code table,
  mapping all language code variations (639-1, 639-2, 639-3) to each other.
  
  Source: https://iso639-3.sil.org/code_tables/639/data
class_docstr_tok: ["Dataset","based","on","the","official","ISO-639","code","table",",","mapping","all","language","code","variations","(","639-1",",","639-2",",","639-3",")","to","each","other",".","Source",":","https",":","\/\/iso639-3.sil.org\/code_tables\/639\/data"]
code: def __init__(self, data_dir: str | pathlib.Path):
      self.data_dir = textacy.utils.to_path(data_dir).resolve()
  
imports: from __future__ import annotations
  import logging
  import operator
  import pathlib
  import random
  import re
  from typing import Dict, Iterable, List, Optional, Set, Tuple
  from cytoolz import itertoolz
  import textacy
  import textacy.utils
  from textacy import io
label_desc: Use image node_id 1 to create a new IsoLangResource object  with example: obj = IsoLangResource(data_dir)