code: def test_config_validation_error_serializeable():
      err = ConfigValidationError(
          message="At least 2 distinct values are required, column only contains ['here']"
      )
  
      loaded_err: ConfigValidationError = pickle.loads(
          pickle.dumps(err)
      )
  
      assert loaded_err.message == err.message
      assert str(err) == str(loaded_err)
  
imports: import pickle
  from ludwig.error import ConfigValidationError, InputDataError
label_desc: Use image node_id 2 for calling a global function with example usage: test_config_validation_error_serializeable() without return types