code: def teardown_method(self):
      self.env.close()
      super().teardown_method()
  
file_path: garage/tests/garage/tf/policies/test_policies.py
imports: import tensorflow
  from garage.envs import GymEnv
  from garage.tf.policies import CategoricalGRUPolicy, CategoricalLSTMPolicy, CategoricalMLPPolicy, ContinuousMLPPolicy, GaussianGRUPolicy, GaussianLSTMPolicy, GaussianMLPPolicy
  from tests.fixtures import TfGraphTestCase
  from tests.fixtures.envs.dummy import DummyBoxEnv, DummyDiscreteEnv
label_desc: Use image node_id 2 for calling the TestDiscretePolicies obj's underlying member method code with example usage: obj.teardown_method() without return types