code: def fetch(self, tokenizer, text):
      return tokenizer.encode(
          text, truncation="longest_first", padding="longest"
      )
  
imports: import concurrent.futures
  import json
  import os
  import shutil
  import tempfile
  import unittest
  from transformers import AutoTokenizer, PreTrainedTokenizerFast
  from transformers.testing_utils import require_tokenizers
  from ..test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 2 for calling the ReduceMutableBorrowTests obj's underlying member method code with example usage: obj.fetch(tokenizer, text) and returns: tokenizer