*
 * <p>This class provides various methods to set parameters for the suggestion request,
 * such as index, query, size, tags, roles, fields, kinds, languages, and other configurations.
 * It also includes methods to build and process the request using OpenSearch's client.</p>
 *
 * <p>Key functionalities include:</p>
 * <ul>
 *   <li>Setting the index, query, and size of the request.</li>

 * It uses XPath expressions to extract data from the XML and stores it in a ResultData object.
 * </p>
 *
 * <p>
 * This class provides several configuration options to customize the XML parsing process, such as:
 * </p>
 * <ul>
 *   <li>Namespace awareness</li>
 *   <li>Coalescing</li>
 *   <li>Entity expansion</li>
 *   <li>Ignoring comments and whitespace</li>
 *   <li>Validation</li>

 * <pre>
 * {@code
 * FtpClient ftpClient = new FtpClient();
 * ftpClient.init(); // Initialize with configured parameters
 * ResponseData responseData = ftpClient.doGet("ftp://example.com/path/to/file.txt");
 * // Process the responseData
 * ftpClient.close(); // Close and release resources
 * }
 * </pre>
 *
 * @author shinsuke
 */
public class FtpClient extends AbstractCrawlerClient {

 */
public interface AccessResultCallback<RESULT extends AccessResult<?>> {
    /**
     * Processes the given access result.
     *
     * @param accessResult the result of the access operation to be processed
     */
    /**
     * Processes the given access result.
     *
     * @param accessResult the result of the access operation to be processed
     */
    void iterate(RESULT accessResult);

        processor.setNotModifiedHttpCodes(new int[] { 304 });

        ResponseData responseData = new ResponseData();
        responseData.setHttpStatusCode(200);
        assertTrue(processor.isSuccessful(responseData));

        responseData.setHttpStatusCode(100);
        assertFalse(processor.isSuccessful(responseData));
        responseData.setHttpStatusCode(304);
        assertFalse(processor.isSuccessful(responseData));

<logger name="org.codelibs.fess.crawler.extractor" level="DEBUG"/>
```

### Monitoring

```java
// Monitor crawling progress
while (crawler.crawlerContext.getStatus() == CrawlerStatus.RUNNING) {
    int processed = dataService.getCount(sessionId);
    System.out.println("Processed: " + processed + " URLs");
    Thread.sleep(5000);
}
```

## Contributing

import org.codelibs.fess.crawler.processor.ResponseProcessor;

/**
 * The Rule interface defines the contract for implementing rules that can be applied to
 * response data in a web crawler. Implementations of this interface should provide logic
 * to determine if a given response data matches the rule, retrieve the rule's identifier,
 * and obtain the associated response processor.
 */
public interface Rule extends Serializable {

    }

    @Override
    public ResponseProcessor getResponseProcessor() {
        return responseProcessor;
    }

    /**
     * Sets the response processor for this rule.
     *
     * @param responseProcessor the response processor to set
     */
    public void setResponseProcessor(final ResponseProcessor responseProcessor) {
        this.responseProcessor = responseProcessor;
    }

		<property name="ruleId">"sitemapsRule"</property>
		<property name="responseProcessor">
			<component
				class="org.codelibs.fess.crawler.processor.impl.SitemapsResponseProcessor">
			</component>
		</property>
		<postConstruct name="addRule">
			<arg>"url"</arg>
			<arg>".*sitemap.*"</arg>
		</postConstruct>
	</component>

                .<DefaultResponseProcessor> singleton("defaultResponseProcessor", DefaultResponseProcessor.class, processor -> {
                    processor.setTransformer(container.getComponent("fileTransformer"));
                    processor.setSuccessfulHttpCodes(new int[] { 200 });
                    processor.setNotModifiedHttpCodes(new int[] { 304 });
                })//