code: def test_file():
      return os.path.join(EXAMPLE_ROOT_DIR, "sample_text.txt")
  
imports: import importlib
  import json
  import os
  import shutil
  import sys
  import time
  from argparse import Namespace
  from pathlib import Path
  import pytest
  import requests
  import test_utils
  import torch
  from model_archiver import ModelArchiverConfig
  from test_utils import REPO_ROOT
  from ts.torch_handler.unit_tests.test_utils.mock_context import MockContext
label_desc: Use image node_id 7 for calling a global function with example usage: test_file() and returns: os