code: def testContextManager_EnterReturnValue(self):
      class UltimateContextManager(_FakeContextManager):
          def enter(self, context: _FakeContext) -> int:
              return 42
  
      with UltimateContextManager() as captured:
          self.assertEqual(captured, 42)
  
imports: from typing import Dict, Any
  import tensorflow
  from tfx.dsl.components.base import base_node
  from tfx.dsl.context_managers import dsl_context
  from tfx.dsl.context_managers import dsl_context_manager
  from tfx.dsl.context_managers import dsl_context_registry
  from tfx.utils import test_case_utils
label_desc: Use image node_id 8 for calling the ContextManagerTest obj's underlying member method code with example usage: obj.testContextManager_EnterReturnValue() and returns: int