code: def test_box_space_encode(self):
      box_space = Box(low=0, high=10, shape=[2], dtype=np.int64)
      value = np.array([2, 3])
      encoded_value = gym_spaces_utils.gym_space_encode(
          box_space, value
      )
      self.assertListEqual([2, 3], encoded_value)
  
file_path: tensor2tensor/tensor2tensor/envs/gym_spaces_utils_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from gym.spaces import Box
  from gym.spaces import Discrete
  import numpy
  from tensor2tensor.envs import gym_spaces_utils
  import tensorflow.compat.v1
label_desc: Use image node_id 4 for calling the GymSpacesUtilsTest obj's underlying member method code with example usage: obj.test_box_space_encode() without return types