code: def _image_files(tmpdir):
      tmpdir = Path(tmpdir)
  
      _rand_image().save(tmpdir / "a_1.png")
      _rand_image().save(tmpdir / "b_1.png")
  
      return [str(tmpdir / "a_1.png"), str(tmpdir / "b_1.png")], 3
  
imports: from pathlib import Path
  from typing import Tuple
  import flash
  import numpy
  import pytest
  import torch
  from flash.audio import AudioClassificationData
  from flash.core.utilities.imports import _MATPLOTLIB_AVAILABLE, _PIL_AVAILABLE, _TOPIC_AUDIO_AVAILABLE
  from pytorch_lightning import seed_everything
label_desc: Use image node_id 2 for calling a global function with example usage: _image_files(tmpdir) and returns: list,  int