cs, err := GetContentChecksum(req.Header)
	if err != nil {
		return ErrInvalidChecksum
	}
	if cs == nil {
		return nil
	}
	r.contentHash = *cs
	if cs.Type.Trailing() {
		r.trailer = req.Trailer
	}
	return r.AddNonTrailingChecksum(cs, ignoreValue)
}

// AddChecksumNoTrailer will add checksum checks as specified in
// https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html

    }

    /**
     * Name of the crawling configuration.
     */
    @Required
    @Size(max = 200)
    public String crawlingConfigName;

    /**
     * Path or URL to be crawled by this configuration.
     */
    @Required
    @Size(max = 1000)
    public String crawlingConfigPath;

    /**
     * Maximum depth for crawling (how many levels deep to follow links).
     */

  /**
   * Saves [cookies] from an HTTP response to this store according to this jar's policy.
   *
   * Note that this method may be called a second time for a single HTTP response if the response
   * includes a trailer. For this obscure HTTP feature, [cookies] contains only the trailer's
   * cookies.
   */
  fun saveFromResponse(
    url: HttpUrl,
    cookies: List<Cookie>,
  )

  /**

        // Default constructor
    }

    /**
     * Enable or disable incremental crawling.
     * When enabled, only new or modified documents are crawled.
     */
    @Size(max = 10)
    public String incrementalCrawling;

    /**
     * Number of days to keep crawled documents before cleanup.
     * Set to -1 to disable automatic cleanup.
     */
    @Required
    @Min(-1)
    @Max(1000)
    @ValidateTypeFailure

 * This class extends ArrayList to hold document maps while tracking content size
 * and processing time metrics. It's used throughout the Fess search system to
 * manage collections of search results and crawled documents.
 *
 */
public class DocList extends ArrayList<Map<String, Object>> {

    /** Serial version UID for serialization */
    private static final long serialVersionUID = 1L;

import org.lastaflute.web.response.StreamResponse;

/**
 * Action class for handling cached document content requests.
 * Provides functionality to retrieve and display cached versions of crawled documents.
 */
public class CacheAction extends FessSearchAction {

    /**
     * Creates a new instance of CacheAction.
     */
    public CacheAction() {
        super();
    }

		}
		if err := w.Close(); err != nil {
			t.Fatalf("Unable to write archive: %s", err)
		}

		// TODO: We may want to check if the archive roundtrips. This would require
		// taking into account addition of the two zero trailer blocks that Writer.Close
		// appends.
	})

     *
     * @param crawlingConfig the crawling configuration associated with the failure
     * @param errorName the name/type of the error that occurred
     * @param url the URL that failed to be crawled
     * @param e the exception that caused the failure
     * @return the stored or updated FailureUrl entity, or null if the exception should be ignored
     */

// If checksum was trailing, they must have been added to r.Trailer.
func TransferChecksumHeader(w http.ResponseWriter, r *http.Request) {
	c, err := GetContentChecksum(r.Header)
	if err != nil || c == nil {
		return
	}
	t, s := c.Type, c.Encoded
	if !c.Type.IsSet() {
		return
	}
	if c.Type.Is(ChecksumTrailing) {
		val := r.Trailer.Get(t.Key())
		if val != "" {
			w.Header().Set(t.Key(), val)
		}

 * This class defines tag patterns that match HTML elements based on tag name, CSS class, ID, or custom attributes.
 * It is used to identify and remove unwanted HTML elements from crawled documents.
 */
public class PrunedTag {
    /** The HTML tag name to match (e.g., "div", "span", "p") */
    private final String tag;
    /** The ID attribute value to match */
    private String id;