code: def is_manually_set(option_name: str) -> bool:
      """Check if a given option was actually defined by the user.
  
      Parameters
      ----------
      option_name : str
          The option to check
  
  
      Returns
      -------
      bool
          True if the option has been set by the user.
  
      """
      return get_where_defined(option_name) not in (
          ConfigOption.DEFAULT_DEFINITION,
          ConfigOption.STREAMLIT_DEFINITION,
      )
  
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 17 for calling a global function with example usage: is_manually_set(option_name) and returns: unknown