statusMap.put(CrawlerStatus.DONE, "Completed");

        // Verify entries
        assertEquals(3, statusMap.size());
        assertEquals("Starting up", statusMap.get(CrawlerStatus.INITIALIZING));
        assertEquals("In progress", statusMap.get(CrawlerStatus.RUNNING));
        assertEquals("Completed", statusMap.get(CrawlerStatus.DONE));

                    }
                }
            });
        }

        startLatch.countDown();
        boolean completed = endLatch.await(30, TimeUnit.SECONDS);
        assertTrue("Test should complete within timeout", completed);
        executor.shutdown();

        assertEquals(threadCount * operationsPerThread * 2, successCount.get());

 *   It allows you to register callbacks that will be executed when the computation is complete,
 *   either successfully (resolve) or with an error (reject).
 * </p>
 *
 * <p>
 *   The Deferred class has a Promise inner class that allows you to register callbacks
 *   to be executed when the computation is complete.
 *   The Promise class has then and error methods that allow you to register callbacks

4. See error

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Environment (please complete the following information):**
 - OS: [e.g. Windows 10]
 - Version [e.g. 13.5.0]

**Additional context**

     * Test basic initialization with session ID
     */
    public void test_init_withSessionId() {
        String sessionId = "test-session-001";
        urlFilter.init(sessionId);
        // Initialization should complete without errors
        assertNotNull(urlFilter);
    }

    /**
     * Test initialization with null session ID
     */
    public void test_init_withNullSessionId() {
        urlFilter.init(null);

 * This class contains information about the number of suggest documents,
 * the number of input documents, any errors that occurred during the operation,
 * and the time taken to complete the operation.
 */
public class SuggestIndexResponse implements Response {
    /** The number of suggest documents. */
    protected final int numberOfSuggestDocs;
    /** The number of input documents. */

public enum CrawlerStatus {
    /**
     * The crawler is initializing.
     */
    INITIALIZING,

    /**
     * The crawler is currently running.
     */
    RUNNING,

    /**
     * The crawler has completed its task.
     */
    DONE;

4. See error

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Environment (please complete the following information):**
 - OS: [e.g. Windows 10]
 - Version [e.g. 3.5.0]

**Additional context**

        crawler.urlFilter.addInclude("https://example.com/.*");
        
        // Execute crawling
        String sessionId = crawler.execute();
        System.out.println("Crawling completed. Session ID: " + sessionId);
    }
}
```

### File System Crawling

```java
import org.codelibs.fess.crawler.client.fs.FileSystemClient;

// Configure for file system crawling

import java.util.ArrayList;
import java.util.List;

/**
 * Represents the response of a suggest delete operation.
 * This class contains information about any errors that occurred during the operation
 * and the time taken to complete the operation.
 */
public class SuggestDeleteResponse {
    /** List of errors that occurred during the operation. */
    protected final List<Throwable> errors = new ArrayList<>();