code: def _create_mock_artifact(
      self,
      aid: int,
      is_blessed: bool,
      pipeline_name: str,
      component_id: str,
  ):
      model_blessing = standard_artifacts.ModelBlessing()
      model_blessing.id = aid
      model_blessing.pipeline_name = pipeline_name
      model_blessing.set_string_custom_property(
          "current_model", "uri-%d" % aid
      )
      model_blessing.set_int_custom_property("current_model_id", aid)
      model_blessing.set_string_custom_property(
          "component_id", component_id
      )
      model_blessing.set_int_custom_property("blessed", is_blessed)
      return model_blessing.mlmd_artifact
  
imports: import tensorflow
  from tfx.components.model_validator import driver
  from tfx.types import standard_artifacts
label_desc: Use image node_id 1 for calling the DriverTest obj's underlying member method code with example usage: obj._create_mock_artifact(aid, is_blessed, pipeline_name, component_id) and returns: model_blessing