code: def setUp(self):
      self.observation_spec = tensor_spec.TensorSpec((2, 3), tf.float32)
      self.reward_spec = tensor_spec.TensorSpec((2,), tf.float32)
      self.time_step_spec = ts.time_step_spec(
          self.observation_spec, reward_spec=self.reward_spec
      )
      self.action_spec = tensor_spec.TensorSpec((2,), tf.float32)
      self.random_env = random_tf_environment.RandomTFEnvironment(
          self.time_step_spec, self.action_spec
      )
  
file_path: agents/tf_agents/environments/random_tf_environment_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  import tensorflow
  from tf_agents.environments import random_tf_environment
  from tf_agents.specs import tensor_spec
  from tf_agents.trajectories import time_step
  from tf_agents.utils import test_utils
label_desc: Use image node_id 1 for calling the RandomTFEnvironmentTest obj's underlying member method code with example usage: obj.setUp() without return types