code: def test_update(self):
      generation_config = GenerationConfig()
      update_kwargs = {
          "max_new_tokens": 1024,
          "foo": "bar",
      }
      update_kwargs_copy = copy.deepcopy(update_kwargs)
      unused_kwargs = generation_config.update(**update_kwargs)
  
      # update_kwargs was not modified (no side effects)
      self.assertEqual(update_kwargs, update_kwargs_copy)
  
      # update_kwargs was used to update the config on valid attributes
      self.assertEqual(generation_config.max_new_tokens, 1024)
  
      # `.update()` returns a dictionary of unused kwargs
      self.assertEqual(unused_kwargs, {"foo": "bar"})
  
imports: import copy
  import os
  import tempfile
  import unittest
  import warnings
  from huggingface_hub import HfFolder, delete_repo
  from parameterized import parameterized
  from requests.exceptions import HTTPError
  from transformers import AutoConfig, GenerationConfig
  from transformers.testing_utils import TOKEN, USER, is_staging_test
label_desc: Use image node_id 3 for calling the GenerationConfigTest obj's underlying member method code with example usage: obj.test_update() without return types