code: def get_description(self):
          '''
          :return: description string (with listening host:port)
          '''
          return '%(description)s listening on %(host)s:%(port)s' % {
              'description': super(WebInterface, self).get_description(),
              'host': self._host,
              'port': self._port
          f get_description(self):
          '''
          :return: description string (with listening host:port)
          '''
          return '%(description)s listening on %(host)s:%(port)s' % {
              'description': super(WebInterface, self).get_description(),
              'host': self._host,
              'port': self._port
          }
docs: :return: description string (with listening host:port)