code: def _perform_lob_write_requests(self, unwritten_lobs):
          
          while unwritten_lobs:
              request = RequestMessage.new(
                  self.connection,
                  RequestSegment(
                      message_types.WRITELOB,
                      WriteLobRequest(unwritten_lobs)
                  )
              )
              self.connection.send_request(request)
docs: After sending incomplete LOB data during an INSERT or UPDATE this method will be called.
          It sends missing LOB data possibly in multiple LOBWRITE requests for all LOBs.
          :param unwritten_lobs: A deque list of LobBuffer instances containing LOB data.
                 Those buffers have been assembled in the parts.Parameter.pack_lob_data() method.