code: def get_user_id(self):
      if self.expired:
          return None
  
      if "localId" in self.user.keys():
          return self.user["localId"]
  
      return self.user["userId"]
  
imports: import os
  import getpass
  import time
  import json
  import shutil
  import atexit
  import tempfile
  import requests
  import re
  import uuid
  from builtins import input
  import google.auth.transport.requests
  import google.oauth2.id_token
  from studio.util.util import rand_string, check_for_kb_interrupt
  from studio import pyrebase
  from studio.util import logs
label_desc: Use image node_id 7 for calling the FirebaseAuth obj's underlying member method code with example usage: obj.get_user_id() and returns: self, None, self