result.setDestinationIndicator(DfTypeUtil.toString(source.get("destinationIndicator")));
            result.setDisplayName(DfTypeUtil.toString(source.get("displayName")));
            result.setEmployeeNumber(DfTypeUtil.toString(source.get("employeeNumber")));
            result.setEmployeeType(DfTypeUtil.toString(source.get("employeeType")));

    }

    public String getEmployeeNumber() {
        checkSpecifiedProperty("employeeNumber");
        return convertEmptyToNull(employeeNumber);
    }

    public void setEmployeeNumber(String value) {
        registerModifiedProperty("employeeNumber");
        this.employeeNumber = value;
    }

    public String getEmployeeType() {
        checkSpecifiedProperty("employeeType");

                "displayName");
        setupEpg(_epgMap, et -> ((User) et).getEmployeeNumber(), (et, vl) -> ((User) et).setEmployeeNumber(DfTypeUtil.toString(vl)),
                "employeeNumber");
        setupEpg(_epgMap, et -> ((User) et).getEmployeeType(), (et, vl) -> ((User) et).setEmployeeType(DfTypeUtil.toString(vl)),
                "employeeType");

                setAttributeValue(result, fessConfig.getLdapAttrMail(), o -> user.setMail(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrEmployeeNumber(), o -> user.setEmployeeNumber(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrTelephoneNumber(), o -> user.setTelephoneNumber(o.toString()));