code: def test_class():
      x = X(1)
      dump_obj(x, "class", overwrite_exist_dir=True)
      y = load_obj("class")
      assert x.__class__ == y.__class__
      assert x.a == y.a
      recursive_rm_dir("class")
  
imports: import inspect
  import os
  import sys
  from collections import OrderedDict
  import pytest
  from greykite.common.python_utils import assert_equal
  from greykite.common.testing_utils import generate_df_for_tests
  from greykite.framework.templates.autogen.forecast_config import ComputationParam
  from greykite.framework.templates.autogen.forecast_config import EvaluationPeriodParam
  from greykite.framework.templates.autogen.forecast_config import ForecastConfig
  from greykite.framework.templates.autogen.forecast_config import MetadataParam
  from greykite.framework.templates.autogen.forecast_config import ModelComponentsParam
  from greykite.framework.templates.forecaster import Forecaster
  from greykite.framework.templates.model_templates import ModelTemplateEnum
  from greykite.framework.templates.pickle_utils import dump_obj
  from greykite.framework.templates.pickle_utils import load_obj
  from greykite.framework.templates.pickle_utils import recursive_rm_dir
  from greykite.framework.utils.result_summary import summarize_grid_search_results
label_desc: Use image node_id 8 for calling a global function with example usage: test_class() without return types