# File lib/yard/templates/helpers/html_helper.rb, line 219
      def link_file(filename, title = nil, anchor = nil)
        if CodeObjects::ExtraFileObject === filename
          file = filename
        else
          contents = File.file?(filename) ? nil : ''
          file = CodeObjects::ExtraFileObject.new(filename, contents)
        end
        return title || file.title unless serializer
        link_url(url_for_file(file, anchor), title || file.title)
      end