code: def verify_get_tokenizer(
      tokenizer_name: str, expected_num_tokens: int
  ):
      tokenizer = HuggingFaceTokenizers.get_tokenizer(tokenizer_name)
      assert (
          tokenizer_name in HuggingFaceTokenizers.tokenizers
      ), "Tokenizer should be cached"
      assert (
          len(tokenizer.encode(TestHuggingFaceTokenizers.TEST_PROMPT))
          == expected_num_tokens
      )
  
file_path: H2O/h2o_hf/helm/src/helm/proxy/clients/test_huggingface_tokenizer.py
imports: from helm.common.general import singleton
  from .huggingface_tokenizer import HuggingFaceTokenizers
label_desc: Use image node_id 1 for calling the TestHuggingFaceTokenizers obj's underlying member method code with example usage: obj.verify_get_tokenizer(tokenizer_name, expected_num_tokens) without return types