code: def test_dummy_struct_core_env():
      env = build_dummy_maze_env_with_structured_core_env()
      env.reset()
  
      for i in range(10):
          assert env.actor_id()[1] == i % 2
          action = env.action_space.sample()
          observation, _, _, _ = env.step(action)
  
      env.close()
  
imports: from gym import spaces
  from maze.test.shared_test_utils.dummy_env.dummy_struct_env import DummyStructuredEnvironment
  from maze.test.shared_test_utils.helper_functions import build_dummy_maze_env, build_dummy_maze_env_with_structured_core_env
label_desc: Use image node_id 3 for calling a global function with example usage: test_dummy_struct_core_env() without return types