|| 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]);
    }

    default void setDefaultSortValue(final String value) {

    }

    @Override
    protected void writeHeaders(final HttpServletResponse response) {
        ComponentUtil.getFessConfig().getApiJsonResponseHeaderList().forEach(e -> response.setHeader(e.getFirst(), e.getSecond()));
    }

    protected void writeJsonResponse(final int status, final Throwable t) {
        final Supplier<String> stacktraceString = () -> {
            final StringBuilder buf = new StringBuilder(100);