code: def test_no_init_api(shutdown_only):
      workflow.list_all()
  
file_path: ray/python/ray/workflow/tests/test_basic_workflows_4.py
imports: import os
  import pytest
  from ray._private.test_utils import run_string_as_driver
  import ray
  from ray import workflow
  from ray.tests.conftest import *
label_desc: Use image node_id 4 for calling a global function with example usage: test_no_init_api(shutdown_only) without return types