code: def tearDown(self):
      ray.shutdown()
  
imports: import unittest
  import ray
  from ray import air
  from ray import tune
  from ray.rllib.utils.framework import try_import_tf
  from ray.tune.registry import get_trainable_cls
label_desc: Use image node_id 2 for calling the TestEagerSupportOffPolicy obj's underlying member method code with example usage: obj.tearDown() without return types