public function fromEntities(Language $language = null, Page $page = null)
    {
        $this->language = $language;
        $this->page = $page;
        if (null !== $this->language && null !== $this->page) {
            $options = array(
                "languageId" => $this->language->getId(),
                "pageId" => $this->page->getId(),
            );
            $this->seo = $this->setupSeo($options);
        }
    }