code: def _update_config_with_sensitive_env_var(
      config_options: Dict[str, ConfigOption]
  ):
      """Update the config system by parsing the environment variable.
  
      This should only be called from get_config_options.
      """
      for opt_name, opt_val in config_options.items():
          if not opt_val.sensitive:
              continue
          env_var_value = os.environ.get(opt_val.env_var)
          if env_var_value is None:
              continue
          _set_option(opt_name, env_var_value, _DEFINED_BY_ENV_VAR)
  
imports: import copy
  import os
  import secrets
  import threading
  from collections import OrderedDict
  from typing import Any, Callable, Dict, Optional, cast
  import toml
  from blinker import Signal
  from streamlit import config_util, development, env_util, file_util, util
  from streamlit.config_option import ConfigOption
  from streamlit.errors import StreamlitAPIException
label_desc: Use image node_id 20 for calling a global function with example usage: _update_config_with_sensitive_env_var(config_options) without return types