code: def custom_working_directory(tmp_path):
      # Set the custom working directory
      custom_dir = tmp_path / "model_dir"
      custom_dir.mkdir()
      os.chdir(custom_dir)
      yield custom_dir
      # Clean up and return to the original working directory
      os.chdir(tmp_path)
  
file_path: serve/test/pytest/test_torch_export.py
imports: from pathlib import Path
  import torch
  from pkg_resources import packaging
  from ts.torch_handler.image_classifier import ImageClassifier
  from ts.torch_handler.unit_tests.test_utils.mock_context import MockContext
  from ts.utils.util import load_label_mapping
  from ts_scripts.utils import try_and_handle
  import os
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: custom_working_directory(tmp_path) without return types