getUnitTreeToChooseParentUnit(buffer, unit);
getUnitTreeToChooseParentUnit(buffer, unit, currentDate);
    public String getAllUnitsToChooseParentUnit() throws FenixFilterException, FenixServiceException,            ExcepcaoPersistencia {        StringBuilder buffer = new StringBuilder();        List<Unit> allUnitsWithoutParent = UnitUtils.readAllUnitsWithoutParents();        Collections.sort(allUnitsWithoutParent, new BeanComparator("name"));        for (Unit unit : allUnitsWithoutParent) {            if (!unit.equals(this.getUnit())) {                getUnitTreeToChooseParentUnit(buffer, unit);            }        }        return buffer.toString();    }