code: def test_check_callback_rules_in_form(self):
      check_callback_rules(None, None)
  
imports: import copy
  import enum
  import os
  import unittest
  from unittest.mock import MagicMock, patch
  import pytest
  from streamlit import config
  from streamlit.elements import utils
  from streamlit.elements.utils import check_callback_rules, check_session_state_rules, maybe_coerce_enum, maybe_coerce_enum_sequence
  from streamlit.errors import StreamlitAPIException
  from streamlit.runtime.state.common import RegisterWidgetResult
label_desc: Use image node_id 4 for calling the ElementUtilsTest obj's underlying member method code with example usage: obj.test_check_callback_rules_in_form() without return types