def sitemap_meta_keywords
      return controller.sitemap_meta_data[:keywords].blank? ? nil : tag(:meta, {name: :keywords, content: controller.sitemap_meta_data[:keywords]}, false, false)
    end
def sitemap_meta_keywords
      return controller.sitemap_meta_data[:keywords].blank? ? nil : tag(:meta, {name: :keywords, content: controller.sitemap_meta_data[:keywords]}, false, false)
    end
Generates a keywords meta tag for use inside HTML header area.
 @return [String] HTML safe keywords meta tag.