code: def testEnvMaxDuration(self, max_duration):
      obs_spec = array_spec.BoundedArraySpec((2, 3), np.int32, -10, 10)
      env = random_py_environment.RandomPyEnvironment(
          obs_spec,
          episode_end_probability=0.1,
          max_duration=max_duration,
      )
      num_episodes = 100
  
      for _ in range(num_episodes):
          time_step = env.step([0])  # pytype: disable=wrong-arg-types
          self.assertTrue(time_step.is_first())
          num_steps = 0
          while not time_step.is_last():
              time_step = env.step(
                  [0]
              )  # pytype: disable=wrong-arg-types
              num_steps += 1
          self.assertLessEqual(num_steps, max_duration)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  import numpy
  from tf_agents.environments import random_py_environment
  from tf_agents.specs import array_spec
  from tf_agents.utils import test_utils
label_desc: Use image node_id 3 for calling the RandomPyEnvironmentTest obj's underlying member method code with example usage: obj.testEnvMaxDuration(max_duration) without return types