code: def test_tokenize(self):
      assert (
          self.window_service.tokenize(TEST_PROMPT) == GPT2_TEST_TOKENS
      )
  
file_path: H2O/h2o_hf/helm/src/helm/benchmark/window_services/test_gpt2_window_service.py
imports: import shutil
  import tempfile
  from helm.benchmark.window_services.tokenizer_service import TokenizerService
  from .test_utils import get_tokenizer_service, TEST_PROMPT, GPT2_TEST_TOKENS, GPT2_TEST_TOKEN_IDS
  from .window_service_factory import WindowServiceFactory
label_desc: Use image node_id 6 for calling the TestGPT2WindowService obj's underlying member method code with example usage: obj.test_tokenize() without return types