code: def testSetArtifactStateAsPublishedSetsMlmdStateToLive(self):
      tfx_artifact = _MyArtifact()
      self.assertFalse(tfx_artifact.mlmd_artifact.HasField("state"))
      tfx_artifact.state = artifact.ArtifactState.PUBLISHED
      self.assertEqual(
          tfx_artifact.mlmd_artifact.state,
          metadata_store_pb2.Artifact.State.LIVE,
      )
  
imports: import json
  import textwrap
  from unittest import mock
  from absl import logging
  import tensorflow
  from tfx.types import artifact
  from tfx.types import system_artifacts
  from tfx.types import value_artifact
  from tfx.utils import json_utils
  from google.protobuf import struct_pb2
  from google.protobuf import json_format
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 15 for calling the ArtifactTest obj's underlying member method code with example usage: obj.testSetArtifactStateAsPublishedSetsMlmdStateToLive() without return types