code: def test_pretrained_backbones_catch_url_error():
      def raise_error_if_pretrained(pretrained=False):
          if pretrained:
              raise urllib.error.URLError("Test error")
  
      with pytest.warns(
          UserWarning, match="Failed to download pretrained weights"
      ):
          catch_url_error(raise_error_if_pretrained)(pretrained=True)
  
file_path: lightning-flash/tests/image/test_backbones.py
imports: import urllib.error
  import pytest
  from flash.core.utilities.imports import _TOPIC_IMAGE_AVAILABLE
  from flash.core.utilities.url_error import catch_url_error
  from flash.image.classification.backbones import IMAGE_CLASSIFIER_BACKBONES
label_desc: Use image node_id 4 for calling a global function with example usage: test_pretrained_backbones_catch_url_error() without return types