code: def test_Init(self) -> None:
      self.assertEqual(
          list(self.t.encoded_parameters.keys()), ["b", "c"]
      )
  
imports: from copy import deepcopy
  from typing import List, Sized
  import numpy
  from ax.core.observation import ObservationFeatures
  from ax.core.parameter import ChoiceParameter, ParameterType, RangeParameter
  from ax.core.parameter_constraint import ParameterConstraint
  from ax.core.search_space import RobustSearchSpace, SearchSpace
  from ax.modelbridge.transforms.choice_encode import ChoiceEncode, OrderedChoiceEncode
  from ax.utils.common.testutils import TestCase
  from ax.utils.common.typeutils import checked_cast
  from ax.utils.testing.core_stubs import get_robust_search_space
label_desc: Use image node_id 2 for calling the OrderedChoiceEncodeTransformTest obj's underlying member method code with example usage: obj.test_Init() without return types