public static byte[] cancelChair(int id) {
        MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter();

        mplew.writeShort(SendPacketOpcode.CANCEL_CHAIR.getValue());
        if (id == -1) {
            mplew.write(0);
        } else {
            mplew.write(1);
            mplew.writeShort(id);
        }

        return mplew.getPacket();
    }