code: def check_valid_transformation(klass):
      assert klass(2, 30, transform="normalize")
      assert klass(2, 30, transform="identity")
      assert_raises_regex(
          ValueError,
          "should be 'normalize' or 'identity'",
          klass,
          2,
          30,
          transform="not a valid transform name",
      )
  
imports: import pytest
  import numbers
  import numpy
  import os
  import yaml
  from tempfile import NamedTemporaryFile
  from numpy.testing import assert_array_almost_equal
  from numpy.testing import assert_array_equal
  from numpy.testing import assert_equal
  from numpy.testing import assert_raises_regex
  from skopt import Optimizer
  from skopt.space import Space
  from skopt.space import Real
  from skopt.space import Integer
  from skopt.space import Categorical
  from skopt.space import check_dimension
  from skopt.utils import normalize_dimensions
label_desc: Use image node_id 23 for calling a global function with example usage: check_valid_transformation(klass) without return types