}
        resultData.setEncoding(charsetName);
    }

    /**
     * Returns the result data header.
     * @return The result data header.
     */
    protected String getResultDataHeader() {
        // TODO: Support other XML header types
        return "<?xml version=\"1.0\"?>\n<doc>\n";
    }

    /**
     * Returns the result data body for a single value.

Im Grundkurs erlernen Sie die Herstellung von einfachen Hautcremes. In Kleingruppen erarbeiten Sie selbständig ein
Grundrezept; diese Basiscreme darf dann jeder Teilnehmer individuell vollenden und, mit einem selbstgestalteten Etikett
versehen, nach Hause tragen.
Workshop Nr. 4:

     * Datetime format. This format allows you to omit the time portion, if
     * desired, and use YYYY-MM-DD.
     *
     * Note that this tag is separate from the If-Modified-Since (304) header
     * the server can return, and search engines may use the information from
     * both sources differently.
     */
    private String lastmod;

    /**

import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.pdfbox.Loader;
import org.apache.pdfbox.cos.COSInputStream;
import org.apache.pdfbox.io.RandomAccessReadBuffer;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentInformation;

                logger.debug("Failed to retrieval a cache.", e);
            }
            return new XPathAPI();
        }
    }

    /**
     * Returns the header for the result data.
     * @return The result data header.
     */
    protected String getResultDataHeader() {
        // TODO support other type
        return "<?xml version=\"1.0\"?>\n<doc>\n";
    }

    /**

    /**
     * Constructs a new HtmlTransformer.
     */
    public HtmlTransformer() {
        // Default constructor
    }

    /** Header name for location redirects. */
    protected static final String LOCATION_HEADER = "Location";

    /** The crawler container for dependency injection. */
    @Resource
    protected CrawlerContainer crawlerContainer;

mvn clean install -pl fess-crawler

# Generate test coverage report
mvn jacoco:report
```

### Code Quality

```bash
# Format code
mvn formatter:format

# Update license headers
mvn license:format

# Run static analysis
mvn spotbugs:check
```

### Running Tests

```bash
# Run all tests
mvn test

# Run specific test class
mvn test -Dtest=CrawlerTest

        client.execute(action, request, listener);
    }

    @Override
    public Client filterWithHeader(final Map<String, String> headers) {
        client.filterWithHeader(headers);
        return this;
    }

    /**
     * Deletes documents matching the specified query using scroll and bulk delete.
     *
     * @param index The index to delete from.

</tr>
</tbody>
</table> </td>
</tr>
<tr>
<td align="center" style="padding:0;margin:0;line-height:1px;font-size:1px;">
<!--///////////////////header///////////////////////////-->
<table class="collapse" id="header" align="center" width="500" style="width:500px;background-color:#ffffff;padding:0;margin:0;line-height:1px;font-size:1px;" bgcolor="#ffffff" cellpadding="0" cellspacing="0" border="0">
<tbody>
<tr>

            responseData.setLastModified(statObject.lastModified() == null ? null : Date.from(statObject.lastModified().toInstant()));
            responseData.setMimeType(statObject.contentType());
            statObject.headers().forEach(e -> responseData.addMetaData(e.getFirst(), e.getSecond()));

            if (contentLengthHelper != null) {
                final long maxLength = contentLengthHelper.getMaxLength(responseData.getMimeType());