*/
    public static String concatName(final String s1, final String s2) {
        if (StringUtil.isEmpty(s1) && StringUtil.isEmpty(s2)) {
            return null;
        }
        if (!StringUtil.isEmpty(s1) && StringUtil.isEmpty(s2)) {
            return s1;
        }
        if (StringUtil.isEmpty(s1) && !StringUtil.isEmpty(s2)) {
            return s2;
        }
        return s1 + '.' + s2;
    }

import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import org.codelibs.core.collection.SLinkedList;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.log.Logger;

/**
 * A class that handles timers.
 *
 * @author higa
 *
 */
public class TimeoutManager implements Runnable {

 */
package org.codelibs.fess.opensearch.config.exentity;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.config.bsentity.BsElevateWord;
import org.codelibs.fess.opensearch.config.exbhv.ElevateWordToLabelBhv;

    }

    private static String[] splitLine(final String value) {
        if (StringUtil.isBlank(value)) {
            return StringUtil.EMPTY_STRINGS;
        }
        final String[] values = value.split("[\r\n]");
        final List<String> list = new ArrayList<>(values.length);
        for (final String line : values) {
            if (StringUtil.isNotBlank(line)) {
                list.add(line.trim());
            }

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

import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.annotation.Secured;
import org.codelibs.fess.app.pager.AccessTokenPager;
import org.codelibs.fess.app.service.AccessTokenService;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.pager.LabelTypePager;
import org.codelibs.fess.app.service.LabelTypeService;
import org.codelibs.fess.app.web.CrudMode;

import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang3.StringUtils;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.stream.StreamUtil;
import org.codelibs.fess.exception.FessSystemException;
import org.w3c.dom.Node;

/**
 * Represents a tag configuration for pruning HTML content during document processing.

                .filter(StringUtil::isNotBlank)
                .distinct()
                .collect(Collectors.joining("\n")));
        body.virtualHosts = stream(entity.getVirtualHosts())
                .get(stream -> stream.filter(StringUtil::isNotBlank).distinct().map(String::trim).collect(Collectors.joining("\n")));
        return body;
    }

import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.lang.SystemUtil;
import org.codelibs.fess.crawler.Constants;
import org.codelibs.fess.crawler.CrawlerContext;
import org.codelibs.fess.crawler.container.CrawlerContainer;