code: def _gen_unix_socket_default_path(process_index):
      return f"{TEMPDIR}/mars/{md5(to_binary(str(process_index))).hexdigest()}"
  
imports: import asyncio
  import concurrent.futures
  import os
  import socket
  import sys
  import tempfile
  from abc import ABCMeta
  from asyncio import StreamReader, StreamWriter, AbstractServer
  from functools import lru_cache
  from hashlib import md5
  from typing import Any, Dict, Callable, Coroutine, Type
  from urllib.parse import urlparse
  from ....serialization import AioSerializer, AioDeserializer, deserialize
  from ....utils import implements, to_binary, classproperty
  from .base import Channel, ChannelType, Server, Client
  from .core import register_client, register_server
  from .utils import read_buffers, write_buffers
label_desc: Use image node_id 1 for calling a global function with example usage: _gen_unix_socket_default_path(process_index) and returns: TEMPDIR, str, md5