code: def write_result (self, url_data):
          
          if url_data.valid:
              self.write(u'<tr><td class="valid">')
              self.write(self.part("result"))
              self.write(u'</td><td class="valid">')
              self.write(cgi.escape(_("Valid")))
          else:
              self.write(u'<tr><td class="error">')
              self.write(self.part("result"))
              self.write(u'</td><td class="error">')
              self.write(cgi.escape(_("Error")))
          if url_data.result:
              self.write(u": "+cgi.escape(url_data.result))
          self.writeln(u"</td></tr>")
docs: Write url_data.result.