code: def sleep(self, x):
      time.sleep(x)
      return x
  
imports: import logging
  import os
  import random
  import sys
  import time
  import pytest
  import ray
  import ray.cluster_utils
  from ray.exceptions import RaySystemError
  from ray.dag import InputNode, MultiOutputNode
  from ray.tests.conftest import *
label_desc: Use image node_id 5 for calling the Actor obj's underlying member method code with example usage: obj.sleep(x) and returns: x