class_docstr: Data provider communicating with API server.
class_docstr_tok: ["Data","provider","communicating","with","API","server","."]
code: def _get_userid(self):
      userid = None
      if self.auth:
          userid = self.auth.get_user_id()
      userid = userid if userid else "guest"
      return userid
  
imports: import requests
  import json
  import time
  import re
  from studio.util import logs
  from studio.auth import get_auth
  from studio.credentials.credentials import Credentials
  from studio.storage.storage_setup import get_storage_verbose_level
  from studio.storage.http_storage_handler import HTTPStorageHandler
  from studio.experiments.experiment import experiment_from_dict
  from studio.util.util import retry, check_for_kb_interrupt
label_desc: Use image node_id 19 for calling the HTTPProvider obj's underlying member method code with example usage: obj._get_userid() and returns: userid