code: def join(self) -> int:
      ret = 0
      if self._internal_proc:
          ret = self._internal_proc.wait()
      return ret
  
imports: import datetime
  import os
  import pathlib
  import platform
  import shutil
  import subprocess
  import sys
  import tempfile
  import time
  from typing import TYPE_CHECKING, Any, Dict, Optional
  from wandb import _sentry, termlog
  from wandb.env import error_reporting_enabled
  from wandb.errors import Error
  from wandb.util import get_core_path, get_module
  from .None import _startup_debug, port_file
  from .service_base import ServiceInterface
  from .service_sock import ServiceSockInterface
label_desc: Use image node_id 8 for calling the _Service obj's underlying member method code with example usage: obj.join() and returns: ret