code: def _get_all_available_mps_gpus() -> List[int]:
      """
      Returns:
          A list of all available MPS GPUs
      """
      return [0] if MPSAccelerator.is_available() else []
  
file_path: pytorch-lightning/src/lightning/fabric/accelerators/mps.py
imports: import platform
  from functools import lru_cache
  from typing import List, Optional, Union
  import torch
  from typing_extensions import override
  from lightning.fabric.accelerators.accelerator import Accelerator
  from lightning.fabric.accelerators.registry import _AcceleratorRegistry
label_desc: Use image node_id 1 for calling a global function with example usage: _get_all_available_mps_gpus() and returns: unknown