List<Unit> unitsIst = new ArrayList(); unitsIst.addAll(istUnit.getSubUnits()); return unitsIst;
return unitsIst;
    private List<Unit> readAllUnits() throws FenixServiceException, FenixFilterException, ExcepcaoPersistencia {                               Unit istUnit = UnitUtils.readUnitWithoutParentstByName(UnitUtils.IST_UNIT_NAME);        if(istUnit == null){        	return new ArrayList();        }        List<Unit> unitsIst = new ArrayList();        unitsIst.addAll(istUnit.getSubUnits());        return unitsIst;            }