code: def test_empty_unknown_language(unknown_language_name):
      """
      Check that there is an error for trying to load an unknown language
      """
      with pytest.raises(ValueError):
          pipe = stanza.Pipeline(
              unknown_language_name, download_method=None
          )
  
imports: import pytest
  import shutil
  import tempfile
  import stanza
  from stanza.tests import *
  from stanza.pipeline import core
  from stanza.resources.common import get_md5, load_resources_json
label_desc: Use image node_id 13 for calling a global function with example usage: test_empty_unknown_language(unknown_language_name) without return types