code: def test_set_task_update_with_subtype():
      old_env = MTDummyEnvSubtype()
      env_update = SetTaskUpdate(MTDummyEnv, TEST_TASK, None)
      new_env = env_update(old_env)
      assert new_env is not old_env
      assert new_env is not None
      assert old_env is not None
  
imports: from garage.sampler import SetTaskUpdate
  from tests.fixtures.envs.dummy import DummyBoxEnv
label_desc: Use image node_id 1 for calling a global function with example usage: test_set_task_update_with_subtype() without return types