code: def tokenizer(self):
      # use "old" tokenizer here because of bug when downloading new tokenizer
      return BlenderbotSmallTokenizer.from_pretrained(
          "facebook/blenderbot-90M"
      )
  
imports: from __future__ import annotations
  import unittest
  from transformers import BlenderbotSmallConfig, BlenderbotSmallTokenizer, is_tf_available
  from transformers.testing_utils import require_tf, require_tokenizers, slow
  from transformers.utils import cached_property
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_tf_common import TFModelTesterMixin, ids_tensor
  from ...test_pipeline_mixin import PipelineTesterMixin
label_desc: Use image node_id 1 for calling the TFBlenderbot90MIntegrationTests obj's underlying member method code with example usage: obj.tokenizer() and returns: BlenderbotSmallTokenizer