code: def bert_tokenizer():
      return transformers.AutoTokenizer.from_pretrained(
          "bert-base-uncased"
      )
  
file_path: TextAttack/tests/test_tokenizers.py
imports: import collections
  import pytest
  import transformers
  import textattack
label_desc: Use image node_id 1 for calling a global function with example usage: bert_tokenizer() and returns: transformers