code: def test_new_driver(serve_instance):
      script = """
  import ray
  ray.init(address="{}", namespace="default_test_namespace")
  
  from ray import serve
  
  @serve.deployment
  def driver():
      return "OK!"
  
  serve.run(driver.bind(), name="app")
  """.format(
          ray._private.worker._global_node.address
      )
      run_string_as_driver(script)
  
      handle = serve.get_app_handle("app")
      assert handle.remote().result() == "OK!"
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_new_driver(serve_instance) without return types