code: def test_check_session_state_rules_no_key(self, patched_st_warning):
      check_session_state_rules(5, key=None)
  
      patched_st_warning.assert_not_called()
  
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 6 for calling the ElementUtilsTest obj's underlying member method code with example usage: obj.test_check_session_state_rules_no_key(patched_st_warning) without return types