public void insertDetailTransaksi(Integer trId, List<TrTeaDetail> trDetail){
        session.beginTransaction();
        for(TrTeaDetail td:trDetail ){
            td.setTransactionID(trId);
            session.save(td);
            Tea t = td.product();
            int qt = t.getTeaQty();
            int qte = td.getQuantityTea();
            t.setTeaQty(t.getTeaQty()-td.getQuantityTea());
            session.update(t);
        }
        session.getTransaction().commit();
    }