Баги/Дюпы/Недоработки овера(лостворлда)/etc

    public List<Henna> generateList(Player player)
    {
        List<Henna> list = new ArrayList<Henna>();
        for(TIntObjectIterator<Henna> iterator = _hennas.iterator(); iterator.hasNext();)
        {
            iterator.advance();
            Henna h = iterator.value();
            if(h.isForThisClass(player))
                list.add(h);
        }

        return list;
    }

  public Collection<Henna> getHennas()
    {
        return _hennas.values();
    }

public class HennaEquipList extends L2GameServerPacket
{
    private int _emptySlots;
    private long _adena;
    private List<Henna> _hennas = new ArrayList<Henna>();

    public HennaEquipList(Player player)
    {
        _adena = player.getAdena();
        _emptySlots = player.getHennaEmptySlots();

        final Collection<Henna> hennaList = HennaHolder.getInstance().getHennas();
        _hennas.addAll(hennaList.stream().filter(henna -> player.getInventory().getItemByItemId(henna.getDyeId()) != null).collect(Collectors.toList()));  
    }

    @Override
    protected final void writeImpl()
    {
        writeC(0xee);

        writeQ(_adena);
        writeD(_emptySlots);
        if(_hennas.size() != 0)
        {
            writeD(_hennas.size());
            for(Henna henna : _hennas)
            {
                writeD(henna.getSymbolId()); //symbolid
                writeD(henna.getDyeId()); //itemid of dye
                writeQ(henna.getDrawCount());
                writeQ(henna.getPrice());
                writeD(1); //meet the requirement or not
            }
        }
        else
        {
            writeD(0x01);
            writeD(0x00);
            writeD(0x00);
            writeQ(0x00);
            writeQ(0x00);
            writeD(0x00);
        }
    }
}