code: private Packet addTcpdumpInfoToPacket(Packet parsedPacket){ 
  
          int packetSize = parsedPacket.getPacketSize();
          
          tcpdumpReader.readNewPacket(packetSize);
  
          // Get Tcp Payload
          if ( parsedPacket.isTcp() ) {       
              int payloadSize = parsedPacket.getTcpPayloadSize();
              int payloadStart = parsedPacket.getTcpPayloadStart();
              parsedPacket.setTcpPayload(tcpdumpReader.getPayload(payloadStart, payloadSize));
          }
          
          tcpdumpReader.packetReadComplete();
          
          return parsedPacket;
      }
docs: Adds tcpdump info onto packet parsed from pdml i.e. adds the packet payload for various protocols
  @param parsedPacket
  @return