/** * @param string $link * * @return bool|string */ private function get_url_in_default_language_if_rel_canonical($link) { if ($this->is_permalink_filter_from_rel_canonical()) { $default_language = $this->sitepress->get_default_language(); $link = (string) $this->sitepress->convert_url($link, $default_language); } return $link; }