code: def update(self, body=values.unset, attributes=values.unset,
                 date_created=values.unset, date_updated=values.unset,
                 last_updated_by=values.unset, from_=values.unset):
          
          return self._proxy.update(
              body=body,
              attributes=attributes,
              date_created=date_created,
              date_updated=date_updated,
              last_updated_by=last_updated_by,
              from_=from_,
          )
docs: Update the MessageInstance
  
          :param unicode body: The message to send to the channel
          :param unicode attributes: A valid JSON string that contains application-specific data
          :param datetime date_created: The ISO 8601 date and time in GMT when the resource was created
          :param datetime date_updated: The ISO 8601 date and time in GMT when the resource was updated
          :param unicode last_updated_by: The Identity of the User who last updated the Message, if applicable
          :param unicode from_: The identity of the message's author
  
          :returns: Updated MessageInstance
          :rtype: twilio.rest.chat.v2.service.channel.message.MessageInstance