code: def testTransitionBatched(self):
      observation = np.array([[-1], [-1]])
      reward = np.array([2.0, 2.0])
      discount = np.array([1.0, 1.0])
      time_step = ts.transition(observation, reward, discount)
  
      self.assertItemsEqual([ts.StepType.MID] * 2, time_step.step_type)
      self.assertItemsEqual(observation, time_step.observation)
      self.assertItemsEqual(reward, time_step.reward)
      self.assertItemsEqual(discount, time_step.discount)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import sys
  import numpy
  import tensorflow
  from tf_agents.specs import array_spec
  from tf_agents.specs import tensor_spec
  from tf_agents.trajectories import time_step
  from tf_agents.utils import nest_utils
label_desc: Use image node_id 16 for calling the TimeStepTest obj's underlying member method code with example usage: obj.testTransitionBatched() without return types