* @return this container instance for method chaining
     */
    public <T> StandardCrawlerContainer singleton(final String name, final Class<T> cls, final Consumer<T> initializer) {
        return singleton(name, cls, initializer, (Consumer<T>) null);
    }

    /**
     * Registers a singleton component with the specified name and class.
     * One instance will be shared throughout the container's lifecycle.

                .singleton("httpClient", FaultTolerantClient.class)//
                .singleton("fsClient", FileSystemClient.class)//
                .singleton("smbClient", SmbClient.class)//
                .singleton("smb1Client", org.codelibs.fess.crawler.client.smb1.SmbClient.class)//
                .singleton("ftpClient", FtpClient.class)//

        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("dataHelper", MemoryDataHelper.class)//
                .singleton("urlFilterService", UrlFilterServiceImpl.class)//
                .singleton("includeFilter", UrlFilterImpl.class)//
                .singleton("excludeFilter", UrlFilterImpl.class)//
                .singleton("domainFilter", UrlFilterImpl.class)//
        ;

        container.singleton("archiveStreamFactory", ArchiveStreamFactory.class)
                .singleton("compressorStreamFactory", CompressorStreamFactory.class)
                .singleton("mimeTypeHelper", MimeTypeHelperImpl.class)
                .singleton("tikaExtractor", TikaExtractor.class)
                .singleton("zipExtractor", ZipExtractor.class)

        super.setUp();

        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("sitemapsHelper", SitemapsHelper.class)//
                .singleton("sitemapsRule", SitemapsRule.class)//
                .singleton("fileRule", RegexRule.class)//
                .singleton("ruleManager", RuleManagerImpl.class);

        ruleManager = container.getComponent("ruleManager");

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("extractorFactory", ExtractorFactory.class)
                .singleton("textTransformer", TextTransformer.class)
                .singleton("tikaExtractor", TikaExtractor.class);
        textTransformer = container.getComponent("textTransformer");
        textTransformer.setName("textTransformer");

        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer();
        container.singleton("mimeTypeHelper", MimeTypeHelperImpl.class)
                .singleton("tikaExtractor", TikaExtractor.class)
                .singleton("lhaExtractor", LhaExtractor.class)
                .<ExtractorFactory> singleton("extractorFactory", ExtractorFactory.class, factory -> {

<components namespace="fessCrawler">
	<include path="crawler/container.xml" />

	<component name="mimeTypeHelper"
		class="org.codelibs.fess.crawler.helper.impl.MimeTypeHelperImpl" instance="singleton">
	</component>

	"http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
	<include path="crawler/container.xml" />

	<component name="sitemapsHelper" class="org.codelibs.fess.crawler.helper.SitemapsHelper"
		instance="singleton">
	</component>

        StandardCrawlerContainer container = new StandardCrawlerContainer();
        
        // Configure basic components
        container.singleton("crawler", Crawler.class)
                .singleton("httpClient", HcHttpClient.class)
                .singleton("fileTransformer", FileTransformer.class);
        
        // Get crawler instance
        Crawler crawler = container.getComponent("crawler");