code: def testMaybeBindCustomConfig(self):
      def dummy(custom_config):
          return custom_config
  
      patched = executor_utils.MaybeBindCustomConfig(
          {labels.CUSTOM_CONFIG: '{"value":42}'}, dummy
      )
      self.assertEqual({"value": 42}, patched())
  
imports: import tensorflow
  from tfx.components.transform import executor_utils
  from tfx.components.transform import labels
  from tfx.proto import transform_pb2
  from tfx.types import artifact_utils
  from tfx.types import standard_artifacts
  from tfx.types import standard_component_specs
  from tfx.utils import proto_utils
label_desc: Use image node_id 1 for calling the ExecutorUtilsTest obj's underlying member method code with example usage: obj.testMaybeBindCustomConfig() and returns: custom_config