code: def dump(self, packet):
          
          # fetch flow label
          output = self.trace(packet, _check=False, _output=True)
  
          # dump files
          output(packet['frame'], name=f"Frame {packet['index']}",
                 byteorder=self._endian, nanosecond=self._nnsecd)
docs: Dump frame to output files.
  
          Positional arguments:
              * packet -- dict, a flow packet
                  |-- (str) protocol -- data link type from global header
                  |-- (int) index -- frame number
                  |-- (Info) frame -- extracted frame info
                  |-- (bool) syn -- TCP synchronise (SYN) flag
                  |-- (bool) fin -- TCP finish (FIN) flag
                  |-- (str) src -- source IP
                  |-- (int) srcport -- TCP source port
                  |-- (str) dst -- destination IP
                  |-- (int) dstport -- TCP destination port
                  |-- (numbers.Real) timestamp -- frame timestamp