code: def mock_xla_available(
      monkeypatch: pytest.MonkeyPatch, value: bool = True
  ) -> None:
      monkeypatch.setattr(
          lightning.pytorch.strategies.xla, "_XLA_AVAILABLE", value
      )
      monkeypatch.setattr(
          lightning.pytorch.strategies.single_xla,
          "_XLA_AVAILABLE",
          value,
      )
      monkeypatch.setattr(
          lightning.pytorch.plugins.precision.xla,
          "_XLA_AVAILABLE",
          value,
      )
      monkeypatch.setattr(
          lightning.pytorch.strategies.launchers.xla,
          "_XLA_AVAILABLE",
          value,
      )
      monkeypatch.setattr(
          lightning.fabric.accelerators.xla, "_XLA_AVAILABLE", value
      )
      monkeypatch.setattr(
          lightning.fabric.plugins.environments.xla,
          "_XLA_AVAILABLE",
          value,
      )
      monkeypatch.setattr(
          lightning.fabric.plugins.io.xla, "_XLA_AVAILABLE", value
      )
      monkeypatch.setattr(
          lightning.fabric.strategies.launchers.xla,
          "_XLA_AVAILABLE",
          value,
      )
  
imports: import os
  import signal
  import sys
  import threading
  from functools import partial
  from http.server import SimpleHTTPRequestHandler
  from pathlib import Path
  from typing import List
  from unittest.mock import Mock
  import lightning.fabric
  import lightning.pytorch
  import pytest
  import torch.distributed
  from lightning.fabric.plugins.environments.lightning import find_free_network_port
  from lightning.fabric.strategies.launchers.subprocess_script import _ChildProcessObserver
  from lightning.fabric.utilities.distributed import _distributed_is_initialized
  from lightning.fabric.utilities.imports import _IS_WINDOWS
  from lightning.pytorch.accelerators import XLAAccelerator
  from lightning.pytorch.trainer.connectors.signal_connector import _SignalConnector
  from tqdm import TMonitor
  from tests_pytorch import _PATH_DATASETS
label_desc: Use image node_id 16 for calling a global function with example usage: mock_xla_available(monkeypatch, value) without return types