'The domain param is **necessary**, see .utils.cache_disk for reasons.
the boilerplate method is so we can use this decorator right.
We are caching categories for 1 day.'

@utils.cache_disk(seconds=(86400 * 1), cache_folder=ANCHOR_DIRECTORY)
def _get_category_urls(self, domain):

    return self.extractor.get_category_urls(self.url, self.doc)
