code: def load_tests(loader, standard_tests, unused_pattern):
      """Our tests end in `_test.py`, so need to override the test discovery."""
      this_dir = os.path.dirname(__file__)
      package_tests = loader.discover(
          start_dir=this_dir, pattern="*_test.py"
      )
      standard_tests.addTests(package_tests)
      return standard_tests
  
label_desc: Use image node_id 1 for calling a global function with example usage: load_tests(loader, standard_tests, unused_pattern) and returns: standard_tests