code: def generate_cluster_variable():
      global CLUSTER_ID
      global RAY_CLUSTER_NAME
      global RAY_SERVICE_NAME
      global LOCUST_ID
      CLUSTER_ID = str(uuid.uuid4()).split("-")[0]
      RAY_CLUSTER_NAME = "cluster-" + CLUSTER_ID
      RAY_SERVICE_NAME = "service-" + CLUSTER_ID
      LOCUST_ID = "ray-locust-" + CLUSTER_ID
  
imports: import enum
  import json
  import subprocess
  from kubernetes import client, config, watch
  import requests
  import random
  import uuid
  import pathlib
  import time
  import ray
  import os
label_desc: Use image node_id 1 for calling a global function with example usage: generate_cluster_variable() without return types