code: def testJsonValueObj(self):
      instance = standard_artifacts.JsonValue()
      self.assertEqual(
          _TEST_JSONVALUE_OBJ_RAW,
          instance.encode(_TEST_JSONVALUE_OBJ_DECODED),
      )
      self.assertEqual(
          _TEST_JSONVALUE_OBJ_DECODED,
          instance.decode(_TEST_JSONVALUE_OBJ_RAW),
      )
  
imports: import math
  from typing import Any, Dict
  from unittest import mock
  import absl
  import tensorflow
  from tfx.types import standard_artifacts
  from tfx.utils import json_utils
label_desc: Use image node_id 9 for calling the StandardArtifactsTest obj's underlying member method code with example usage: obj.testJsonValueObj() without return types