if (employee != null) { return employee.getWorkingPlacesByPeriod(beginDate, endDate); } return new ArrayList<Unit>();
return (employee != null) ? employee.getWorkingPlacesByPeriod(beginDate, endDate) : new ArrayList<Unit>();
    public List<Unit> getWorkingPlacesByPeriod(YearMonthDay beginDate, YearMonthDay endDate) {	Employee employee = this.getPerson().getEmployee();	if (employee != null) {	    return employee.getWorkingPlacesByPeriod(beginDate, endDate);	}	return new ArrayList<Unit>();    }