code: def test_config_from_model_shortcut(self):
      config = AutoConfig.from_pretrained("bert-base-uncased")
      self.assertIsInstance(config, BertConfig)
  
imports: import importlib
  import json
  import os
  import sys
  import tempfile
  import unittest
  from pathlib import Path
  import transformers.models.auto
  from transformers.models.auto.configuration_auto import CONFIG_MAPPING, AutoConfig
  from transformers.models.bert.configuration_bert import BertConfig
  from transformers.models.roberta.configuration_roberta import RobertaConfig
  from transformers.testing_utils import DUMMY_UNKNOWN_IDENTIFIER, get_tests_dir
  from test_module.custom_configuration import CustomConfig
label_desc: Use image node_id 2 for calling the AutoConfigTest obj's underlying member method code with example usage: obj.test_config_from_model_shortcut() without return types