code: def test_no_header():
      """
      Check loading a pretrain with <unk> at the end, like GloVe does
      """
      with tempfile.TemporaryDirectory(dir=TEST_WORKING_DIR) as tmpdir:
          filename = os.path.join(tmpdir, "tiny.txt")
          with open(filename, "w", encoding="utf-8") as fout:
              fout.write(UNK_PRETRAIN)
          pt = pretrain.Pretrain(
              vec_filename=filename, save_to_file=False
          )
          check_embedding(pt.emb, unk=True)
  
imports: import os
  import tempfile
  import pytest
  import numpy
  import torch
  from stanza.models.common import pretrain
  from stanza.models.common.vocab import UNK_ID
  from stanza.tests import *
label_desc: Use image node_id 12 for calling a global function with example usage: test_no_header() without return types