code: def testSetSplitNames(self):
      # Should work with None.
      executor_utils.SetSplitNames(["train"], None)
  
      examples1 = standard_artifacts.Examples()
      examples2 = standard_artifacts.Examples()
      executor_utils.SetSplitNames(["train"], [examples1, examples2])
  
      self.assertEqual(examples1.split_names, '["train"]')
      self.assertEqual(examples2.split_names, examples1.split_names)
  
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 9 for calling the ExecutorUtilsTest obj's underlying member method code with example usage: obj.testSetSplitNames() without return types