imports: import shutil
  import tempfile
  import unittest
  from transformers import SPIECE_UNDERLINE, AddedToken, BatchEncoding, NllbTokenizer, NllbTokenizerFast, is_torch_available
  from transformers.testing_utils import get_tests_dir, nested_simplify, require_sentencepiece, require_tokenizers, require_torch
  from ...test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 4 for calling the NllbDistilledIntegrationTest obj's underlying member method code with example usage: obj.test_enro_tokenizer_decode_ignores_language_codes() without return types