code: def test_concrete_class_meta():
      with pytest.raises(TypeError):
  
          class Dummy(metaclass=ConcreteClassMeta):
              @abstractmethod
              def func(self):
                  pass
  
imports: from abc import abstractmethod
  import datetime
  import numpy
  from numpy.random import RandomState
  from numpy.testing import assert_equal
  from pandas import DataFrame, Series, Timedelta, date_range
  import pytest
  from arch import doc
  from arch.univariate.base import implicit_constant
  from arch.utility.array import ConcreteClassMeta, DocStringInheritor, cutoff_to_index, date_to_index, ensure1d, ensure2d, find_index, parse_dataframe
label_desc: Use image node_id 14 for calling a global function with example usage: test_concrete_class_meta() without return types