code: def GitHub_check_authentication(urls, username, password, token):
      """
      Checks that username & password is valid.
      """
      query_GitHub(urls.api_url, username, password, token)
  
imports: import os
  import json
  from subprocess import check_output
  from collections import OrderedDict, defaultdict
  from collections.abc import Mapping
  import glob
  from contextlib import contextmanager
  import requests
  from requests_oauthlib import OAuth2
label_desc: Use image node_id 14 for calling a global function with example usage: GitHub_check_authentication(urls, username, password, token) without return types