HibernateListModel returns null object

[Grace Russo]

How could I make sure the list returned does not contain null objects ?
Any criteria I could specify ?

 final IModel<List<TeamDetail>> model = new HibernateListModel<TeamDetail>(
                TeamDetail.class,

                new CriteriaBuilder() {

                    @Override
                    public void build(final Criteria criteria) {
                        criteria.add(Restrictions.eq("teamDetailId.ui", ui));
                        criteria.add(Restrictions.eq("teamDetailId.teamId", teamId));
                        
                      
                    }
                });