setAttributeValue(result, fessConfig.getLdapAttrUidNumber(), o -> user.setUidNumber(DfTypeUtil.toLong(o)));
                setAttributeValue(result, fessConfig.getLdapAttrGidNumber(), o -> user.setGidNumber(DfTypeUtil.toLong(o)));
                setAttributeValue(result, fessConfig.getLdapAttrHomeDirectory(), o -> user.setHomeDirectory(o.toString()));
            }
        });

     * The value is, e.g. gidNumber <br>
     * comment: LDAP attribute for GID number.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getLdapAttrGidNumber();

    /**
     * Get the value for the key 'ldap.attr.homeDirectory'. <br>
     * The value is, e.g. homeDirectory <br>
     * comment: LDAP attribute for home directory.