# File lib/paperclip/attachment.rb, line 151
    def url(style_name = default_style, options = {})
      default_options = {:timestamp => @options[:use_timestamp], :escape => true}

      if options == true || options == false # Backwards compatibility.
        @url_generator.for(style_name, default_options.merge(:timestamp => options))
      else
        @url_generator.for(style_name, default_options.merge(options))
      end
    end