code: def test_model_from_pretrained_hub_subfolder_sharded(self):
      subfolder = "bert"
      model_id = (
          "hf-internal-testing/tiny-random-bert-sharded-subfolder"
      )
      with self.assertRaises(OSError):
          _ = FlaxBertModel.from_pretrained(model_id)
  
      model = FlaxBertModel.from_pretrained(
          model_id, subfolder=subfolder
      )
  
      self.assertIsNotNone(model)
  
imports: import copy
  import inspect
  import json
  import random
  import tempfile
  import unittest
  from typing import List, Tuple
  import numpy
  import transformers
  from huggingface_hub import HfFolder, delete_repo, set_access_token
  from requests.exceptions import HTTPError
  from transformers import BertConfig, is_flax_available, is_torch_available
  from transformers.models.auto import get_values
  from transformers.testing_utils import TOKEN, USER, CaptureLogger, is_pt_flax_cross_test, is_staging_test, require_flax, torch_device
  from transformers.utils import logging
  from transformers.utils.generic import ModelOutput
label_desc: Use image node_id 4 for calling the FlaxModelUtilsTest obj's underlying member method code with example usage: obj.test_model_from_pretrained_hub_subfolder_sharded() without return types