code: def _check_orphaned(self) -> bool:
      if not self._pid:
          return False
      time_now = time.time()
      # if we have checked already and it was less than 2 seconds ago
      if self._pid_checked_ts and time_now < self._pid_checked_ts + 2:
          return False
      self._pid_checked_ts = time_now
      return not psutil.pid_exists(self._pid)
  
imports: import functools
  import multiprocessing
  import queue
  import threading
  import time
  from threading import Event
  from typing import Any, Callable, Dict, List, Optional
  import psutil
  import wandb
  import wandb.util
  from wandb.proto import wandb_internal_pb2
  from wandb.sdk.internal.settings_static import SettingsStatic
  from wandb.sdk.lib.mailbox import Mailbox, MailboxProbe, MailboxProgress, MailboxProgressAll
  from wandb.sdk.lib.printer import get_printer
  from wandb.sdk.wandb_run import Run
  from ..interface.interface_relay import InterfaceRelay
label_desc: Use image node_id 25 for calling the StreamMux obj's underlying member method code with example usage: obj._check_orphaned() and returns: unknown, False, False