code: def test_model_archive_creation():
      # *.mar created in setup phase
      assert os.path.exists(
          DCGAN_MAR_FILE
      ), "Failed to create dcgan mar file"
  
file_path: serve/test/pytest/test_example_dcgan.py
imports: import os
  import subprocess
  import requests
  import test_utils
  from shutil import copy
  from PIL import Image
  from io import BytesIO
label_desc: Use image node_id 5 for calling a global function with example usage: test_model_archive_creation() without return types