@Override
    public OFQueueOpFailedErrorMsg readFrom(ChannelBuffer bb) throws OFParseError {
      int start = bb.readerIndex();
      // fixed value property version == 4
      byte version = bb.readByte();
      if (version != (byte) 0x4)
        throw new OFParseError("Wrong version: Expected=OFVersion.OF_13(4), got=" + version);
      // fixed value property type == 1
      byte type = bb.readByte();
      if (type != (byte) 0x1)
        throw new OFParseError("Wrong type: Expected=OFType.ERROR(1), got=" + type);
      int length = U16.f(bb.readShort());
      if (length < MINIMUM_LENGTH)
        throw new OFParseError(
            "Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
      if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
        // Buffer does not have all data yet
        bb.readerIndex(start);
        return null;
      }
      if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
      long xid = U32.f(bb.readInt());
      // fixed value property errType == 9
      short errType = bb.readShort();
      if (errType != (short) 0x9)
        throw new OFParseError(
            "Wrong errType: Expected=OFErrorType.QUEUE_OP_FAILED(9), got=" + errType);
      OFQueueOpFailedCode code = OFQueueOpFailedCodeSerializerVer13.readFrom(bb);
      byte[] data = ChannelUtils.readBytes(bb, length - (bb.readerIndex() - start));

      OFQueueOpFailedErrorMsgVer13 queueOpFailedErrorMsgVer13 =
          new OFQueueOpFailedErrorMsgVer13(xid, code, data);
      if (logger.isTraceEnabled()) logger.trace("readFrom - read={}", queueOpFailedErrorMsgVer13);
      return queueOpFailedErrorMsgVer13;
    }
    @Override
    public OFEchoRequest readFrom(ChannelBuffer bb) throws OFParseError {
      int start = bb.readerIndex();
      // fixed value property version == 1
      byte version = bb.readByte();
      if (version != (byte) 0x1)
        throw new OFParseError("Wrong version: Expected=OFVersion.OF_10(1), got=" + version);
      // fixed value property type == 2
      byte type = bb.readByte();
      if (type != (byte) 0x2)
        throw new OFParseError("Wrong type: Expected=OFType.ECHO_REQUEST(2), got=" + type);
      int length = U16.f(bb.readShort());
      if (length < MINIMUM_LENGTH)
        throw new OFParseError(
            "Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
      if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
        // Buffer does not have all data yet
        bb.readerIndex(start);
        return null;
      }
      if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
      long xid = U32.f(bb.readInt());
      byte[] data = ChannelUtils.readBytes(bb, length - (bb.readerIndex() - start));

      OFEchoRequestVer10 echoRequestVer10 = new OFEchoRequestVer10(xid, data);
      if (logger.isTraceEnabled()) logger.trace("readFrom - read={}", echoRequestVer10);
      return echoRequestVer10;
    }
    @Override
    public OFBsnPduTxRequest readFrom(ChannelBuffer bb) throws OFParseError {
      int start = bb.readerIndex();
      // fixed value property version == 1
      byte version = bb.readByte();
      if (version != (byte) 0x1)
        throw new OFParseError("Wrong version: Expected=OFVersion.OF_10(1), got=" + version);
      // fixed value property type == 4
      byte type = bb.readByte();
      if (type != (byte) 0x4)
        throw new OFParseError("Wrong type: Expected=OFType.EXPERIMENTER(4), got=" + type);
      int length = U16.f(bb.readShort());
      if (length < MINIMUM_LENGTH)
        throw new OFParseError(
            "Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
      if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
        // Buffer does not have all data yet
        bb.readerIndex(start);
        return null;
      }
      if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
      long xid = U32.f(bb.readInt());
      // fixed value property experimenter == 0x5c16c7L
      int experimenter = bb.readInt();
      if (experimenter != 0x5c16c7)
        throw new OFParseError(
            "Wrong experimenter: Expected=0x5c16c7L(0x5c16c7L), got=" + experimenter);
      // fixed value property subtype == 0x1fL
      int subtype = bb.readInt();
      if (subtype != 0x1f)
        throw new OFParseError("Wrong subtype: Expected=0x1fL(0x1fL), got=" + subtype);
      long txIntervalMs = U32.f(bb.readInt());
      OFPort portNo = OFPort.read2Bytes(bb);
      short slotNum = U8.f(bb.readByte());
      // pad: 3 bytes
      bb.skipBytes(3);
      byte[] data = ChannelUtils.readBytes(bb, length - (bb.readerIndex() - start));

      OFBsnPduTxRequestVer10 bsnPduTxRequestVer10 =
          new OFBsnPduTxRequestVer10(xid, txIntervalMs, portNo, slotNum, data);
      if (logger.isTraceEnabled()) logger.trace("readFrom - read={}", bsnPduTxRequestVer10);
      return bsnPduTxRequestVer10;
    }