code: def default_feature_extractor(self):
      return (
          ASTFeatureExtractor.from_pretrained(
              "MIT/ast-finetuned-audioset-10-10-0.4593"
          )
          if is_torchaudio_available()
          else None
      )
  
imports: import inspect
  import unittest
  from huggingface_hub import hf_hub_download
  from transformers import ASTConfig
  from transformers.testing_utils import require_torch, require_torchaudio, slow, torch_device
  from transformers.utils import cached_property, is_torch_available, is_torchaudio_available
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor
  from ...test_pipeline_mixin import PipelineTesterMixin
label_desc: Use image node_id 1 for calling the ASTModelIntegrationTest obj's underlying member method code with example usage: obj.default_feature_extractor() and returns: unknown