code: def test_multi_discrete_space(self):
      md_space = gym.spaces.MultiDiscrete(nvec=np.array([3, 4, 5]))
      d = gym_space_to_dict(md_space)
      sp = gym_space_from_dict(d)
  
      _assert_array_equal(
          self.assertAlmostEqual, sp.nvec, md_space.nvec, 0.001
      )
      self.assertEqual(md_space.dtype, sp.dtype)
  
imports: import unittest
  from collections import OrderedDict
  import gymnasium
  import numpy
  from ray.rllib.utils.serialization import convert_numpy_to_python_primitives, gym_space_from_dict, gym_space_to_dict, space_from_dict, space_to_dict
  from ray.rllib.utils.spaces.flexdict import FlexDict
  from ray.rllib.utils.spaces.repeated import Repeated
  from ray.rllib.utils.spaces.simplex import Simplex
label_desc: Use image node_id 4 for calling the TestGymCheckEnv obj's underlying member method code with example usage: obj.test_multi_discrete_space() without return types