final String[] toAddresses;
                if (StringUtil.isNotBlank(toStrs)) {
                    toAddresses = toStrs.split(",");
                } else {
                    toAddresses = StringUtil.EMPTY_STRINGS;
                }
                final Postbox postbox = ComponentUtil.getComponent(Postbox.class);
                try {

        final String index = fessConfig.getIndexDocumentUpdateIndex();
        final Object url = params.get("url");
        if (url == null) {
            return StringUtil.EMPTY_STRINGS;
        }
        final SearchResponse response = client.prepareSearch(index).setQuery(QueryBuilders.termQuery(fessConfig.getIndexFieldUrl(), url))

        final List<SuggestItem> items = new ArrayList<>();

        final String index;
        if (hits.length > 0) {
            index = hits[0].getIndex();
        } else {
            index = SuggestConstants.EMPTY_STRING;
        }

        for (final SearchHit hit : hits) {
            final Map<String, Object> source = hit.getSourceAsMap();
            final String text = source.get(FieldNames.TEXT).toString();

// otherwise it returns false.
func ValuesAreSameType(v1 reflect.Value, v2 reflect.Value) bool {
	return v1.Type() == v2.Type()
}

// IsEmptyString returns true if value is an empty string.
func IsEmptyString(value any) bool {
	if value == nil {
		return true
	}
	switch kindOf(value) {
	case reflect.String:
		if _, ok := value.(string); ok {
			return value.(string) == ""
		}

    }

    @Override
    public synchronized void delete(final SynonymItem item) {
        final SynonymItem synonymItem = item;
        synonymItem.setNewInputs(StringUtil.EMPTY_STRINGS);
        synonymItem.setNewOutputs(StringUtil.EMPTY_STRINGS);
        try (SynonymUpdater updater = new SynonymUpdater(item)) {
            reload(updater);
        }
    }

    protected void reload(final SynonymUpdater updater) {

    private static final Logger logger = LogManager.getLogger(DataStoreFactory.class);

    protected Map<String, DataStore> dataStoreMap = new LinkedHashMap<>();

    protected String[] dataStoreNames = StringUtil.EMPTY_STRINGS;

    protected long lastLoadedTime = 0;

    public void add(final String name, final DataStore dataStore) {
        if (name == null || dataStore == null) {

    private static OptionalEntity<CharMappingItem> getEntity(final CreateForm form) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            final CharMappingItem entity = new CharMappingItem(0, StringUtil.EMPTY_STRINGS, StringUtil.EMPTY);
            return OptionalEntity.of(entity);
        case CrudMode.EDIT:
            if (form instanceof EditForm) {

                }
            }
            return contentList.toArray(new String[contentList.size()]);
        }
        return StringUtil.EMPTY_STRINGS;
    }

    private String toLowerCase(final String term) {
        return term != null ? term.toLowerCase(Locale.ROOT) : term;
    }

    public void setRegexPrefix(final String regexPrefix) {

                return new String[] { obj.toString() };
            }
        } catch (final XPathException e) {
            logger.warn("Failed to parse the content by {}", path, e);
            return StringUtil.EMPTY_STRINGS;
        }

    }

    protected DOMParser getDomParser() {
        final DOMParser parser = new DOMParser();
        try {
            // feature

        }
    }

    @Override
    public synchronized void delete(final CharMappingItem item) {
        final CharMappingItem mappingItem = item;
        mappingItem.setNewInputs(StringUtil.EMPTY_STRINGS);
        mappingItem.setNewOutput(StringUtil.EMPTY);
        try (MappingUpdater updater = new MappingUpdater(item)) {
            reload(updater);
        }
    }