code: def test_appo(self):
      check_support("APPO", {"num_workers": 1, "num_gpus": 0})
  
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 5 for calling the TestEagerSupportPolicyGradient obj's underlying member method code with example usage: obj.test_appo() without return types