def render_noindex(tags)
      meta_tags.extract_noindex.each do |name, content|
        tags << Tag.new(:meta, name: name, content: content) if content.present?
      end
    end
def render_noindex(tags)
      meta_tags.extract_noindex.each do |name, content|
        tags << Tag.new(:meta, name: name, content: content) if content.present?
      end
    end
Renders noindex and nofollow meta tags.

 @param [Array<Tag>] tags a buffer object to store tag in.