* It serves as a data transfer object between the web layer and the crawling
 * service components.
 */
public class StartCrawlingForm {

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

/**
 * Helper class for sending notifications to various platforms.
 */
public class NotificationHelper {

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

    private static final Logger logger = LogManager.getLogger(NotificationHelper.class);

    /** Line feed character for message formatting. */

    protected FessConfig fessConfig;

    /** Behavior class for user database operations */
    @Resource
    protected UserBhv userBhv;

    /**
     * Default constructor for GroupService.
     */
    public GroupService() {
        // Default constructor
    }

    /**
     * Retrieves a paginated list of groups based on the provided pager criteria.

 */
public abstract class SessionServicePacket {

    /**
     * Default constructor for SessionServicePacket.
     * Creates a new session service packet instance.
     */
    public SessionServicePacket() {
        // Default constructor
    }

    // session service packet types
    static final int SESSION_MESSAGE = 0x00;

import jcifs.smb1.util.LogStream;

/**
 * Lmhosts file handling for NetBIOS name resolution.
 */
public class Lmhosts {

    /**
     * Default constructor for Lmhosts.
     */
    public Lmhosts() {
        // Default constructor
    }

    private static final String FILENAME = Config.getProperty("jcifs.smb1.netbios.lmhosts");
    private static final Hashtable TAB = new Hashtable();

# Object Lock and Immutability Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)

MinIO server allows WORM for specific objects or by configuring a bucket with default object lock configuration that applies default retention mode and retention duration to all objects. This makes objects in the bucket immutable i.e. delete of the version are not allowed until an expiry specified in the bucket's object lock configuration or object retention.

	// Default Default logger
	Default = New(log.New(os.Stdout, "\r\n", log.LstdFlags), Config{
		SlowThreshold:             200 * time.Millisecond,
		LogLevel:                  Warn,
		IgnoreRecordNotFoundError: false,
		Colorful:                  true,
	})
	// Recorder logger records running SQL into a recorder instance
	Recorder = traceRecorder{Interface: Default, BeginAt: time.Now()}

Entonces:

```Python
q: Union[str, None] = Query(default=None)
```

...hace que el parámetro sea opcional, con un valor por defecto de `None`, lo mismo que:

```Python

    setDefault(Float.class, 1F);
    setDefault(double.class, 1D);
    setDefault(Double.class, 1D);
    setDefault(Class.class, Class.class);
  }

  /**
   * Sets the default value for {@code type}. The default value isn't used in testing {@link
   * Object#equals} because more than one sample instances are needed for testing inequality. To set

        doc.put("key", "value");
        assertEquals("value", DocumentUtil.getValue(doc, "key", String.class, "default"));

        doc.put("key", null);
        assertEquals("default", DocumentUtil.getValue(doc, "key", String.class, "default"));
    }

    public void test_list_with_null_elements() {
        Map<String, Object> doc = new HashMap<>();
        List<String> listWithNulls = Arrays.asList("a", null, "b", null, "c");