code: def test_from_pretrained_dynamic_feature_extractor(self):
      model = AutoFeatureExtractor.from_pretrained(
          "hf-internal-testing/test_dynamic_feature_extractor",
          trust_remote_code=True,
      )
      self.assertEqual(model.__class__.__name__, "NewFeatureExtractor")
  
imports: import json
  import sys
  import tempfile
  import unittest
  from pathlib import Path
  from transformers import CONFIG_MAPPING, FEATURE_EXTRACTOR_MAPPING, AutoConfig, AutoFeatureExtractor, Wav2Vec2Config, Wav2Vec2FeatureExtractor
  from transformers.testing_utils import DUMMY_UNKNOWN_IDENTIFIER, get_tests_dir
  from test_module.custom_configuration import CustomConfig
  from test_module.custom_feature_extraction import CustomFeatureExtractor
label_desc: Use image node_id 8 for calling the AutoFeatureExtractorTest obj's underlying member method code with example usage: obj.test_from_pretrained_dynamic_feature_extractor() without return types