code: def test_tokenize_eos(self):
      eos_token: str = "</s>"
      token_ids = self.tokenizer.tokenize(eos_token)
      assert singleton(token_ids) == 2
      assert self.tokenizer.decode(token_ids) == eos_token
  
file_path: H2O/h2o_hf/helm/src/helm/proxy/clients/yalm_tokenizer/test_yalm_tokenizer.py
imports: from typing import List
  from helm.common.general import singleton
  from .yalm_tokenizer import YaLMTokenizer
label_desc: Use image node_id 4 for calling the TestYaLMTokenizer obj's underlying member method code with example usage: obj.test_tokenize_eos() without return types