class_docstr: Sanity tests for A2C exec impl.
class_docstr_tok: ["Sanity","tests","for","A2C","exec","impl","."]
code: def tearDown(self):
      ray.shutdown()
  
file_path: ray/rllib_contrib/a2c/tests/test_a2c.py
imports: import unittest
  from rllib_a2c.a2c import A2CConfig
  import ray
  from ray.rllib.utils.test_utils import check_compute_single_action, check_train_results, framework_iterator
label_desc: Use image node_id 2 for calling the TestA2C obj's underlying member method code with example usage: obj.tearDown() without return types