code: def setup(self) -> None:
      super().setup()
      self._handler_lock = threading.RLock()
  
file_path: ray/python/ray/autoscaler/_private/spark/spark_job_server.py
imports: import json
  import logging
  import threading
  from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
  from pathlib import Path
  from pyspark.util import inheritable_thread_target
  from ray.util.spark.cluster_init import _start_ray_worker_nodes
label_desc: Use image node_id 1 for calling the SparkJobServerRequestHandler obj's underlying member method code with example usage: obj.setup() without return types