*
     * @return the searcher name
     */
    public String getName() {
        if (name == null) {
            name = StringUtil.decamelize(this.getClass().getSimpleName().replace("Searcher", StringUtil.EMPTY)).toLowerCase(Locale.ENGLISH);
        }
        return name;
    }

    /**
     * Executes a search operation with the specified parameters.
     * This method must be implemented by concrete searcher classes.

        if (matcher.find()) {
            if (pathMapperFunc == null) {
                final String replacement = StringUtil.isNotBlank(getReplacement()) ? getReplacement() : StringUtil.EMPTY;
                pathMapperFunc = pathMappingHelper.createPathMatcher(matcher, replacement);
            }
            try {
                return pathMapperFunc.apply(input, matcher);

        switch (form.crudMode) {
        case CrudMode.CREATE:
            final StemmerOverrideItem entity = new StemmerOverrideItem(0, StringUtil.EMPTY, StringUtil.EMPTY);
            return OptionalEntity.of(entity);
        case CrudMode.EDIT:
            if (form instanceof EditForm) {

        super(params)
    }

    @Override
    protected boolean changed(JApiCompatibility member) {
        return member instanceof JApiClass && !member.superclass.binaryCompatible && !member.superclass.compatibilityChanges.empty
    }

    @Override
    protected Violation checkSuperClassChanges(JApiClass apiClass, CtClass oldClass, CtClass newClass) {

 */
fun <T: Any> atMostOneOf(vararg providers: Provider<T>): Provider<T> {
    return providers.map { provider ->
        provider.map {
            Optional.of(it)
        }.orElse(
            Optional.empty<T>()
        )
    }.reduce { acc, next ->
        acc.zip(next) { left, right ->
            when {
                left.isPresent -> {
                    require(!right.isPresent) {

            return Optional.empty();
        }
        JApiMethod jApiMethod = (JApiMethod) jApiCompatibility;
        Map<AccessorKey, ReplacedAccessor> oldMethods = context.getUserData(OLD_REMOVED_ACCESSORS_OF_UPGRADED_PROPERTIES);
        AccessorKey key = AccessorKey.ofOldMethod(jApiMethod);
        return oldMethods.containsKey(key) ? Optional.of(key) : Optional.empty();
    }

            var html = '<table class="table-condensed">';
            html += '<thead>';
            html += '<tr>';

            // add empty cell for week number
            if (this.showWeekNumbers || this.showISOWeekNumbers)
                html += '<th></th>';

        //    return null; // handled later
        //}
    }

    @Override
    public OptionalThing<String> determineAlias(final Locale locale) {
        return OptionalObject.empty();
    }

            }, validationErrorLambda);
        }

        final String oldPassword =
                getSession().map(session -> (String) session.getAttribute(INVALID_OLD_PASSWORD)).orElse(StringUtil.EMPTY);
        getUserBean().ifPresent(user -> {
            final String userId = user.getUserId();
            fessLoginAssist.findLoginUser(new LocalUserCredential(userId, oldPassword)).orElseGet(() -> {

        public String getInitParameter(final String name) {
            if (SpnegoHttpFilter.Constants.LOGGER_LEVEL.equals(name)) {
                final String logLevel = getProperty(SPNEGO_LOGGER_LEVEL, StringUtil.EMPTY);
                if (StringUtil.isNotBlank(logLevel)) {
                    return logLevel;
                }
                if (logger.isDebugEnabled()) {
                    return "3";
                }