code: def test_visualization(self):
      env = PointEnv()
      wrapped_env = RL2Env(env)
  
      assert env.render_modes == wrapped_env.render_modes
      mode = env.render_modes[0]
      assert env.render(mode) == wrapped_env.render(mode)
  
      wrapped_env.reset()
      wrapped_env.visualize()
      wrapped_env.step(wrapped_env.action_space.sample())
      wrapped_env.close()
  
imports: from garage.envs import PointEnv
  from garage.tf.algos.rl2 import RL2Env
label_desc: Use image node_id 3 for calling the TestRL2Env obj's underlying member method code with example usage: obj.test_visualization() without return types