code: def get_rust_tokenizer(self, **kwargs):
      kwargs.update(self.special_tokens_map)
      return self.rust_tokenizer_class.from_pretrained(
          self.tmpdirname, **kwargs
      )
  
imports: import json
  import os
  import unittest
  from transformers import BartTokenizer, BartTokenizerFast, BatchEncoding
  from transformers.models.roberta.tokenization_roberta import VOCAB_FILES_NAMES
  from transformers.testing_utils import require_tokenizers, require_torch
  from transformers.utils import cached_property
  from ...test_tokenization_common import TokenizerTesterMixin, filter_roberta_detectors
label_desc: Use image node_id 3 for calling the TestTokenizationBart obj's underlying member method code with example usage: obj.get_rust_tokenizer() and returns: self