code: def test_spec_name_nested(self):
      dict_space = gym.spaces.Tuple(
          (
              gym.spaces.Dict(
                  {
                      "spec_0": gym.spaces.Dict(
                          {
                              "spec_1": gym.spaces.Discrete(2),
                              "spec_2": gym.spaces.Discrete(2),
                          }
                      ),
                  }
              ),
              gym.spaces.Discrete(2),
          )
      )
      spec = gym_wrapper.spec_from_gym_space(
          dict_space, name="observation"
      )
      self.assertEqual(
          "observation/tuple_0/spec_0/spec_1",
          spec[0]["spec_0"]["spec_1"].name,
      )
      self.assertEqual(
          "observation/tuple_0/spec_0/spec_2",
          spec[0]["spec_0"]["spec_2"].name,
      )
      self.assertEqual("observation/tuple_1", spec[1].name)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import math
  from absl.testing.absltest import mock
  import gymnasium
  import numpy
  from tf_agents.environments import gymnasium_wrapper
  from tf_agents.utils import test_utils
label_desc: Use image node_id 15 for calling the GymnasiumWrapperSpecTest obj's underlying member method code with example usage: obj.test_spec_name_nested() without return types