code: def translate(self, desired_locale=None):
          
  
          translated_message = Message._translate_msgid(self.msgid,
                                                        self.domain,
                                                        desired_locale)
          if self.params is None:
              # No need for more translation
              return translated_message
  
          # This Message object may have been formatted with one or more
          # Message objects as substitution arguments, given either as a single
          # argument, part of a tuple, or as one or more values in a dictionary.
          # When translating this Message we need to translate those Messages too
          translated_params = _translate_args(self.params, desired_locale)
  
          translated_message = translated_message % translated_params
  
          return translated_message
docs: Translate this message to the desired locale.
  
          :param desired_locale: The desired locale to translate the message to,
                                 if no locale is provided the message will be
                                 translated to the system's default locale.
  
          :returns: the translated message in unicode