code: def assertBlessed(self):
      self.assertFileExists(
          os.path.join(self._blessing.uri, "INFRA_BLESSED")
      )
      self.assertEqual(
          1, self._blessing.get_int_custom_property("blessed")
      )
  
imports: import os
  import signal
  import threading
  from typing import Any, Dict
  from unittest import mock
  import tensorflow
  from tfx.components.infra_validator import error_types
  from tfx.components.infra_validator import executor
  from tfx.components.infra_validator import request_builder
  from tfx.components.infra_validator import serving_bins
  from tfx.dsl.io import fileio
  from tfx.proto import infra_validator_pb2
  from tfx.types import artifact_utils
  from tfx.types import standard_artifacts
  from tfx.types import standard_component_specs
  from tfx.utils import path_utils
  from tfx.utils import proto_utils
  from google.protobuf import json_format
label_desc: Use image node_id 14 for calling the ExecutorTest obj's underlying member method code with example usage: obj.assertBlessed() without return types