code: def test_get_vocab(self):
      vocab_keys = list(self.get_tokenizer().get_vocab().keys())
  
      self.assertEqual(vocab_keys[0], "[PAD]")
      self.assertEqual(vocab_keys[1], "[CLS]")
      self.assertEqual(vocab_keys[-1], "j")
      self.assertEqual(len(vocab_keys), 1_012)
  
file_path: H2O/h2o_flexgen/benchmark/third_party/transformers/tests/models/xlm_prophetnet/test_tokenization_xlm_prophetnet.py
imports: import unittest
  from transformers.models.xlm_prophetnet.tokenization_xlm_prophetnet import SPIECE_UNDERLINE, XLMProphetNetTokenizer
  from transformers.testing_utils import get_tests_dir, require_sentencepiece, slow
  from transformers.utils import cached_property
  from ...test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 3 for calling the XLMProphetNetTokenizationTest obj's underlying member method code with example usage: obj.test_get_vocab() without return types