code: def test_mps_availability():
      assert MPSAccelerator.is_available()
  
file_path: pytorch-lightning/tests/tests_pytorch/accelerators/test_mps.py
imports: from collections import namedtuple
  import pytest
  import torch
  from lightning.pytorch import Trainer
  from lightning.pytorch.accelerators import MPSAccelerator
  from lightning.pytorch.demos.boring_classes import BoringModel
  import tests_pytorch.helpers.pipelines
  from tests_pytorch.helpers.runif import RunIf
label_desc: Use image node_id 2 for calling a global function with example usage: test_mps_availability() without return types