code: def _after_run(self, runner, pipeline, context):
      self._test_case.assertEqual(context["foo"], 42)
      context["foo"] = 24
  
imports: from unittest import mock
  from absl.testing import parameterized
  import tensorflow
  from tfx.dsl.compiler import compiler
  from tfx.orchestration import pipeline
  from tfx.orchestration import tfx_runner
  from tfx.tools.cli.handler import dag_runner_patcher
label_desc: Use image node_id 4 for calling the _DummyDagRunnerPatcher obj's underlying member method code with example usage: obj._after_run(runner, pipeline, context) without return types