final String xpath = xpathConfigMap.get(XPath.DEFAULT_LANG);
        if (StringUtil.isNotBlank(xpath)) {
            return xpath;
        }
        return fessConfig.getCrawlerDocumentHtmlLangXpath();
    }

    protected String getContentXpath(final FessConfig fessConfig, final Map<String, String> xpathConfigMap) {
        final String xpath = xpathConfigMap.get(XPath.DEFAULT_CONTENT);

import java.util.function.Consumer;

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathEvaluationResult;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import javax.xml.xpath.XPathNodes;

import org.codelibs.fess.crawler.exception.CrawlerSystemException;
import org.w3c.dom.Node;

public class XPathAPI {

    private final XPath xPath;

    public XPathAPI() {

        }

        // xpath.*
        public static class XPath {
            public static final String DEFAULT_LANG = "default.lang";
            public static final String DEFAULT_CONTENT = "default.content";
            public static final String DEFAULT_DIGEST = "default.digest";
            // xapth.<field>=<value>
        }

        // config.*

        }

        return url.replaceAll("([^:])/+", "$1/");
    }

    protected boolean isValidPath(final String path) {
        if (StringUtil.isBlank(path)) {
            return false;
        }

        final Matcher matcher = invalidUrlPattern.matcher(path);
        if (matcher.find()) {
            return false;
        }

        return true;
    }

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

import javax.xml.xpath.XPathEvaluationResult;
import javax.xml.xpath.XPathException;
import javax.xml.xpath.XPathNodes;

import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.stream.StreamUtil;
import org.codelibs.fess.crawler.entity.ExtractData;

    # Remove empty testcases
    for p in testsuite._elem.xpath(".//testcase"):
      if not len(p):  # pylint: disable=g-explicit-length-test
        testsuite._elem.remove(p)
    # Change "testsuite > testcase,system-out" to "testsuite > testcase > error"
    for p in testsuite._elem.xpath(".//system-out"):
      for c in p.getparent().xpath(".//error | .//failure"):
        c.text = p.text
      p.getparent().remove(p)

import javax.xml.XMLConstants;
import javax.xml.namespace.NamespaceContext;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathNodes;

import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.crawler.Constants;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.xml.xpath.XPathEvaluationResult;
import javax.xml.xpath.XPathException;
import javax.xml.xpath.XPathNodes;

import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.fess.crawler.Constants;
import org.codelibs.fess.crawler.entity.AccessResultData;

import org.lastaflute.core.security.PrimaryCipher;

public class ParameterUtil {
    private static final String CIPHER_PREFIX = "{cipher}";

    protected static final String XPATH_PREFIX = "field.xpath.";

    protected static final String META_PREFIX = "field.meta.";

    protected static final String VALUE_PREFIX = "field.value.";

    protected static final String SCRIPT_PREFIX = "field.script.";

crawler.metadata.name.mapping=\
title=title:string\n\
Title=title:string\n\
dc:title=title:string\n\

# html
crawler.document.html.content.xpath=//BODY
crawler.document.html.lang.xpath=//HTML/@lang
crawler.document.html.digest.xpath=//META[@name='description']/@content
crawler.document.html.canonical.xpath=//LINK[@rel='canonical'][1]/@href
crawler.document.html.pruned.tags=noscript,script,style,header,footer,aside,nav,a[rel=nofollow]