.stream().forEach(v -> modifyDeleteEntry(modifyList, attrGivenName, v)));
        final String attrMail = fessConfig.getLdapAttrMail();
        OptionalUtil.ofNullable(user.getMail()).filter(StringUtil::isNotBlank).ifPresent(s -> modifyReplaceEntry(modifyList, attrMail, s))

                        });

                        writeJsonResponse(HttpServletResponse.SC_CREATED, escapeJsonKeyValue(RESULT_FIELD, "created"));

                    }).orElse(() -> {
                        throw new WebApiException(HttpServletResponse.SC_NOT_FOUND, "Not found: " + docId);
                    });

        } catch (final WebApiException e) {

                            || stream(user.getGroups()).get(stream -> stream.anyMatch(s -> (GROUP_VALUE_PREFIX + s).equals(key))))
                    .orElse(false)) {
                return p.getSecond();
            }
            return null;
        }).filter(StringUtil::isNotBlank).toArray(n -> new String[n]);
    }