public function article($entity)
    {
        if (!$entity->displayArticleMetaTags) {
            return '';
        }

        $attributes = [
            'article:publisher' => Configure::read('Settings.Cms.SEO.Social.facebook_url'),
            'article:tag' => '',
            'article:section' => ''
        ];

        if ($entity->displayMetaDates) {
            $attributes['article:published_time'] = ($entity->published !== null) ? $entity->published->format('c') : null;
            $attributes['article:modified_time'] = $entity->modified->format('c');
        }

        $out = '';
        foreach ($attributes as $property => $content) {
            $out .= $this->_render(self::ATTR_PROP, $property, $content);
        }

        return $out;
    }