code: def test_slice_with_array(self):
      obs_space = gym.spaces.Box(-np.ones(4), np.ones(4))
      view_reqs = {
          SampleBatch.T: ViewRequirement(SampleBatch.T),
          SampleBatch.OBS: ViewRequirement("obs", space=obs_space),
          "prev_obses": ViewRequirement("obs", shift=[-3, -1]),
      }
  
      ac = AgentCollector(view_reqs=view_reqs, is_policy_recurrent=True)
  
      obses = self._simulate_env_steps(ac, n_steps=10)
  
      sample_batch = ac.build_for_training(view_reqs)
      # exclude the last one since these are the next_obses
      expected_obses = np.stack(obses[:-1])
  
      self.assertEqual(sample_batch["prev_obses"].shape, (10, 2, 4))
  
      # check if the last time step is correct
      check(sample_batch["prev_obses"][-1], expected_obses[-4:-1:2])
  
      # check if the padding in the beginning is correct
      check(
          sample_batch["prev_obses"][0],
          np.ones((2, 1)) * expected_obses[0],
      )
  
imports: import gymnasium
  import numpy
  import unittest
  import ray
  import math
  from ray.rllib.policy.sample_batch import SampleBatch
  from ray.rllib.policy.view_requirement import ViewRequirement
  from ray.rllib.utils.test_utils import check
  from ray.rllib.evaluation.collectors.agent_collector import AgentCollector
label_desc: Use image node_id 12 for calling the TestAgentCollector obj's underlying member method code with example usage: obj.test_slice_with_array() without return types