code: def is_stop(token: str) -> bool:
      if not StringUtils.stop_words:
          StringUtils.stop_words = load_json_file(STOP_WORDS_FILE)
          StringUtils.stop_words.extend(DISAMBIGUATION_CATEGORY)
      if token not in StringUtils.stop_words:
          return False
      return True
  
file_path: nlp-architect/nlp_architect/utils/string_utils.py
imports: import os
  import re
  import string
  from typing import List
  from nlp_architect.utils.io import load_json_file
  from nlp_architect.utils.text import SpacyInstance
label_desc: Use image node_id 2 for calling the StringUtils obj's underlying member method code with example usage: obj.is_stop(token) and returns: True, False