public function getFilteredPages()
    {
        $pages = Versioned::get_including_deleted(SiteTree::class);
        $pages = $this->applyDefaultFilters($pages);

        $pages = $pages->filterByCallback(function (SiteTree $page) {
            // Doesn't exist on either stage or live
            return $page->isArchived();
        });
        return $pages;
    }