docs: def __set_status(self, value):
          '''
          Sets the deliveries status of this method.
          @param value: str
          '''
          if value not in [DELIVERY_METHOD_STATUS_PENDING,
                           DELIVERY_METHOD_STATUS_SENT,
                           DELIVERY_METHOD_STATUS_CONFIRMED,
                           DELIVERY_METHOD_STATUS_BOUNCED]:
              raise ValueError("Invalid deliveries method status '%s'" % value)
  
          self.__status = value