*/
    public Handler() {
        // Default constructor
    }

    /**
     * Opens a connection to the GCS URL.
     *
     * @param u The URL to open a connection to
     * @return A new GcsURLConnection instance
     * @throws IOException If the connection cannot be opened
     */
    @Override
    protected URLConnection openConnection(final URL u) throws IOException {

     */
    public Handler() {
        // Default constructor
    }

    /**
     * Opens a connection to the S3 URL.
     *
     * @param u The URL to open a connection to
     * @return A new S3URLConnection instance
     * @throws IOException If the connection cannot be opened
     */
    @Override
    protected URLConnection openConnection(final URL u) throws IOException {

                        .indices()
                        .prepareOpen(docIndex)
                        .execute(ActionListener.wrap(res2 -> logger.info("Opened index: {}", docIndex),
                                e -> logger.warn("Failed to open index: {}", docIndex, e)));
            }, e -> logger.warn("Failed to close index: {}", docIndex, e)));
        });

    protected static final String OIC_REDIRECT_URL = "oic.redirect.url";

    /** Configuration key for OpenID Connect token server URL. */
    protected static final String OIC_TOKEN_SERVER_URL = "oic.token.server.url";

    /** Configuration key for OpenID Connect client secret. */
    protected static final String OIC_CLIENT_SECRET = "oic.client.secret";

import com.nimbusds.jwt.JWTParser;
import com.nimbusds.oauth2.sdk.AuthorizationCode;
import com.nimbusds.openid.connect.sdk.AuthenticationErrorResponse;
import com.nimbusds.openid.connect.sdk.AuthenticationResponse;
import com.nimbusds.openid.connect.sdk.AuthenticationResponseParser;
import com.nimbusds.openid.connect.sdk.AuthenticationSuccessResponse;

import jakarta.annotation.PostConstruct;

        } else {
            task.run();
        }
    }

    /**
     * Opens a connection to the specified URL.
     *
     * @param u the URL
     * @return the HttpURLConnection
     * @throws IOException if an I/O exception occurs
     */
    protected HttpURLConnection open(final URL u) throws IOException {

import org.codelibs.fess.util.ComponentUtil;
import org.lastaflute.web.response.StreamResponse;
import org.lastaflute.web.util.LaServletContextUtil;

import jakarta.annotation.PostConstruct;

/**
 * Helper class for Open Search Description Document.
 */
public class OsddHelper {

    /**
     * Default constructor.
     */
    public OsddHelper() {
        // Default constructor
    }

    @Required
    @Min(-1)
    @Max(1000)
    @ValidateTypeFailure
    public Integer dayForCleanup;

    /**
     * Number of threads to use for crawling operations.
     * Higher values increase crawling speed but consume more resources.
     */
    @Required
    @Min(0)
    @Max(100)
    @ValidateTypeFailure
    public Integer crawlingThreadCount;

    /**
     * Enable or disable search query logging.

			</plugin>
			<plugin>
				<artifactId>maven-source-plugin</artifactId>
			</plugin>
			<plugin>
				<artifactId>maven-surefire-plugin</artifactId>
				<configuration>
					<argLine>--add-opens java.base/java.net=ALL-UNNAMED</argLine>
					<excludes>
						<exclude>**/JodExtractorTest.java</exclude>
					</excludes>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.jacoco</groupId>

1. Fork repo
2. Create feature branch (`feature/amazing-feature`)
3. Make focused commits
4. Add tests
5. Format code (`mvn formatter:format && mvn license:format`)
6. Run tests (`mvn test`)
7. Open Pull Request

---

## Common Development Tasks

### Adding a Protocol Client

1. **Implement `CrawlerClient`**:
```java
public class MyClient extends AbstractCrawlerClient {
    @Override