code: def testMethodPropagation(self):
      env = self._get_py_env(True, False, batch_size=1)
      env.foo = mock.Mock()
      tf_env = tf_py_environment.TFPyEnvironment(env)
      tf_env.foo()
      env.foo.assert_called_once()
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import threading
  from typing import Text
  from absl.testing import parameterized
  from absl.testing.absltest import mock
  import numpy
  import tensorflow
  from tf_agents import specs
  from tf_agents.environments import batched_py_environment
  from tf_agents.environments import py_environment
  from tf_agents.environments import suite_gym
  from tf_agents.environments import tf_py_environment
  from tf_agents.trajectories import time_step
  from tf_agents.utils import common
label_desc: Use image node_id 3 for calling the TFPYEnvironmentTest obj's underlying member method code with example usage: obj.testMethodPropagation() without return types