code: def submit(self, stanza):
          
          body = _encode(**stanza)
          self.service.post(self.path, body=body)
          return self
docs: Adds keys to the current configuration stanza as a
          dictionary of key-value pairs.
  
          :param stanza: A dictionary of key-value pairs for the stanza.
          :type stanza: ``dict``
          :return: The :class:`Stanza` object.