code: def url_defaults(self, func: Callable) -> Callable:
          
          self.record_once(lambda state: state.app.url_defaults(func, self.name))
          return func
docs: Add a url default preprocessor.
  
          This is designed to be used as a decorator, and has the same
          arguments as :meth:`~quart.Quart.url_defaults`. This will
          apply to urls in this blueprint. An example usage,
  
          .. code-block:: python
  
              blueprint = Blueprint(__name__)
              @blueprint.url_defaults
              def default(endpoint, values):
                  ...