code: def test_passing_client_kwargs(self, mock_session_factory):
      backends = initialize_secrets_backends()
      systems_manager = next(
          backend
          for backend in backends
          if backend.__class__.__name__
          == "SystemsManagerParameterStoreBackend"
      )
  
      # Mock SessionFactory, session and client
      mock_session_factory_instance = mock_session_factory.return_value
      mock_ssm_client = mock.MagicMock(return_value="mock-ssm-client")
      mock_session = mock.MagicMock()
      mock_session.client = mock_ssm_client
      mock_create_session = mock.MagicMock(return_value=mock_session)
      mock_session_factory_instance.create_session = mock_create_session
  
      systems_manager.client
      assert mock_session_factory.call_count == 1
      mock_session_factory_call_kwargs = (
          mock_session_factory.call_args.kwargs
      )
      assert "conn" in mock_session_factory_call_kwargs
      conn_wrapper = mock_session_factory_call_kwargs["conn"]
  
      assert (
          conn_wrapper.conn_id
          == "SystemsManagerParameterStoreBackend__connection"
      )
      assert (
          conn_wrapper.role_arn
          == "arn:aws:iam::222222222222:role/awesome-role"
      )
  
      mock_ssm_client.assert_called_once_with(
          service_name="ssm", use_ssl=False
      )
  
imports: from __future__ import annotations
  import json
  from unittest import mock
  import pytest
  from moto import mock_ssm
  from airflow.configuration import initialize_secrets_backends
  from airflow.providers.amazon.aws.secrets.systems_manager import SystemsManagerParameterStoreBackend
  from tests.test_utils.config import conf_vars
label_desc: Use image node_id 8 for calling the TestSsmSecrets obj's underlying member method code with example usage: obj.test_passing_client_kwargs(mock_session_factory) without return types