private static int compareModelVersions(String first, String second) {
        // we use a dedicated comparator because we control our model version scheme.
        String[] firstSegments = StringUtils.split(first, ".");
        String[] secondSegments = StringUtils.split(second, ".");
        for (int i = 0; i < Math.max(firstSegments.length, secondSegments.length); i++) {

            final String[] values = StringUtils.split(s, "=", 2);
            List<Pair<String, String>> list = responseHeaderMap.get(values[0]);
            if (list == null) {
                list = new ArrayList<>();
                responseHeaderMap.put(values[0], list);
            }
            final String[] keyValue = StringUtils.split(values[1], ":", 2);
            if (keyValue.length == 2) {

        });

        LaRequestUtil.getOptionalRequest().ifPresent(req -> {
            searchLog.setClientIp(StringUtils.abbreviate(ComponentUtil.getViewHelper().getClientIp(req), 100));
            searchLog.setReferer(StringUtils.abbreviate(req.getHeader("referer"), 1000));
            searchLog.setUserAgent(StringUtils.abbreviate(req.getHeader("user-agent"), 255));

import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblemCollector;
import org.apache.maven.model.merge.MavenModelMerger;
import org.codehaus.plexus.util.StringUtils;

/**
 * Handles inheritance of model values.
 *
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@SuppressWarnings({"checkstyle:methodname"})
@Named
@Singleton

import org.apache.maven.model.building.ModelProblem.Version;
import org.apache.maven.model.building.ModelProblemCollector;
import org.apache.maven.model.building.ModelProblemCollectorRequest;
import org.codehaus.plexus.util.StringUtils;
import org.codehaus.plexus.util.xml.Xpp3Dom;

/**
 * Handles conversion of the <code>&lt;reporting&gt;</code> section into the configuration of Maven Site Plugin 3.x,

import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblemCollector;
import org.apache.maven.model.merge.MavenModelMerger;
import org.codehaus.plexus.util.StringUtils;

/**
 * Handles normalization of a model.
 *
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Named
@Singleton
@Deprecated(since = "4.0.0")

            cmdList.add(StringUtils.join(webConfigIds, ','));
        }
        if (fileConfigIds != null && fileConfigIds.length > 0) {
            cmdList.add("-f");
            cmdList.add(StringUtils.join(fileConfigIds, ','));
        }
        if (dataConfigIds != null && dataConfigIds.length > 0) {
            cmdList.add("-d");
            cmdList.add(StringUtils.join(dataConfigIds, ','));
        }

        mergeSite_Url(target, source, sourceDominant, context);
    }

    protected boolean isSiteEmpty(Site site) {
        return StringUtils.isEmpty(site.getId())
                && StringUtils.isEmpty(site.getName())
                && StringUtils.isEmpty(site.getUrl());
    }

    @Override
    protected void mergeSite_Url(Site target, Site source, boolean sourceDominant, Map<Object, Object> context) {

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

import org.apache.commons.lang3.StringUtils;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.collection.LruHashMap;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.entity.AccessResult;

        Objects.requireNonNull(output, "output cannot be null");
        Objects.requireNonNull(model, "model cannot be null");

        String encoding = model.getModelEncoding();
        // TODO Use StringUtils here
        if (encoding == null || encoding.length() <= 0) {
            encoding = "UTF-8";
        }

        try (Writer out = new OutputStreamWriter(output, encoding)) {
            write(out, options, model);