code: def test_get_validate_label_missing(self):
      args = Namespace(
          validate_label_locale=from_here(
              "test_data/validate_locale_ger.py"
          )
      )
      f = get_validate_label(args)
      self.assertEqual(f, None)
  
file_path: DeepSpeech/tests/test_importers.py
imports: import unittest
  from argparse import Namespace
  from deepspeech_training.util.importers import validate_label_eng, get_validate_label
  from pathlib import Path
label_desc: Use image node_id 3 for calling the TestGetValidateLabel obj's underlying member method code with example usage: obj.test_get_validate_label_missing() without return types