code: def test_inferencer_with_fast_bert_tokenizer():
      model = Inferencer.load(
          "bert-base-german-cased",
          task_type="text_classification",
          use_fast=True,
          num_processes=0,
      )
      tokenizer = model.processor.tokenizer
      assert type(tokenizer) is BertTokenizerFast
  
imports: import pytest
  import numpy
  from farm.infer import Inferencer
  from transformers import BertTokenizerFast
label_desc: Use image node_id 3 for calling a global function with example usage: test_inferencer_with_fast_bert_tokenizer() without return types