public Object getValueAt(int rowIndex, int columnIndex) {
        refreshData(skip);
        HBTriplet triplet = rowData.get(rowIndex);
        switch(columnIndex) {
            //case 0: return triplet.getRowKeyString();
            case 0: return triplet.getFamilyString();
            case 1: return triplet.getQualifierString();
            case 2: return triplet.getValueString();
        }
        return "<empty>";
    }