public static byte[] getSlotUpdate(byte invType, byte newSlots) {
            MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter();

            mplew.writeShort(SendPacketOpcode.INVENTORY_GROW.getValue());
            mplew.write(invType);
            mplew.write(newSlots);


            return mplew.getPacket();
        }