}

    /**
     * Creates a string buffer for logging statistics information.
     *
     * @param keyObj the crawler object
     * @param time the timestamp to include
     * @return a StringBuilder with basic log information
     */
    private StringBuilder createStringBuffer(final Object keyObj, final long time) {
        final StringBuilder buf = new StringBuilder(1000);

        List<String> excludedUrls = crawlingConfigHelper.getExcludedUrlList("123");
        // Should exclude ConnectException but include the other 2
        assertEquals(2, excludedUrls.size());
        assertTrue(excludedUrls.contains("http://test.com/1.html"));
        assertTrue(excludedUrls.contains("http://test.com/2.html"));

    /** The key of the configuration. e.g.  */
    String CRAWLER_DOCUMENT_FILE_DEFAULT_EXCLUDE_INDEX_PATTERNS = "crawler.document.file.default.exclude.index.patterns";

    /** The key of the configuration. e.g.  */
    String CRAWLER_DOCUMENT_FILE_DEFAULT_INCLUDE_SEARCH_PATTERNS = "crawler.document.file.default.include.search.patterns";

```bash
# Using elasticdump
elasticdump \
  --input=http://old-es-server:9200/my-index \
  --output=documents.json \
  --type=data
```

**Step 2: Convert to Fess Format**

Transform documents to include Fess required fields. Example transformation script:

```python
import json

with open('documents.json', 'r') as infile, \
     open('fess-documents.json', 'w') as outfile:
    for line in infile:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components>
	<include path="convention.xml" />
	<include path="lastaflute_core.xml"/>
	<include path="fess.xml" />

	<component name="fessSuggest" class="org.codelibs.fess.exec.SuggestCreator"
			   instance="prototype">
	</component>
	<component name="suggestHelper" class="org.codelibs.fess.helper.SuggestHelper">

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components>
	<include path="convention.xml" />
	<include path="lastaflute_core.xml"/>
	<include path="fess.xml" />

	<include path="crawler_opensearch.xml" />
	<include path="fess_thumbnail.xml"/>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components>
	<include path="convention.xml" />
	<include path="lastaflute.xml" />
	
	<!-- Register systemProperties for test environment -->
	<component name="systemProperties" class="org.codelibs.fess.unit.TestSystemProperties" />

            task.dependsOn(extension.getUserManual().getStagedDocumentation());

            task.sources(patternSet -> {
                patternSet.include("**/*.adoc");
                patternSet.include("**/*.js");
                patternSet.exclude("javaProject*Layout.adoc");
                patternSet.exclude("userguide_single.adoc");
                patternSet.exclude("snippets/**/*.adoc");

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
	<include path="crawler/container.xml" />

	<component name="intervalController"
		class="org.codelibs.fess.crawler.interval.FessIntervalController"
		instance="prototype">
	</component>

        getFs().sync(spec -> {
            spec.from(kotlinDslExtensionsJar, zip -> zip.include("**/*.kt"));
            spec.into(getGeneratedSources());
        });
        getFs().sync(spec -> {
            spec.from(kotlinDslExtensionsJar, zip -> zip.include("**/*.class"));
            spec.into(getGeneratedClasses());
        });
    }

    private File getKotlinDslExtensionsJar() {