* This class represents a single protected word entry in the dictionary.
 */
public class ProtwordsItem extends DictionaryItem {
    private final String input;

    private String newInput;

    /**
     * Constructor for ProtwordsItem.
     * @param id the unique identifier for this item
     * @param input the protected word input
     */
    public ProtwordsItem(final long id, final String input) {
        this.id = id;

 * including databases, CSV files, and other structured data sources.
 */
public class CreateForm {

    /**
     * Creates a new CreateForm instance.
     */
    public CreateForm() {
        // Default constructor
    }

    /** CRUD operation mode (CREATE, EDIT, etc.) */
    @ValidateTypeFailure
    public Integer crudMode;

    /** Configuration name for identifying this data source */
    @Required

    /** The role of the message sender. */
    private String role;

    /** The content of the message. */
    private String content;

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

    /**
     * Creates a new message with the specified role and content.
     *
     * @param role the message role
     * @param content the message content

public final class WebApiUtil {

    /**
     * Request attribute key for storing web API exceptions.
     */
    private static final String WEB_API_EXCEPTION = "webApiException";

    /**
     * Private constructor to prevent instantiation.
     */
    private WebApiUtil() {
    }

    /**
     * Sets an object in the current request attributes.
     *
     * @param name The attribute name

 * to influence search result rankings for specific documents.
 */
public class CreateForm {

    /**
     * Creates a new CreateForm instance.
     */
    public CreateForm() {
        // Default constructor
    }

    /** CRUD operation mode (CREATE, EDIT, etc.) */
    @ValidateTypeFailure
    public Integer crudMode;

    /** URL expression pattern to match documents for boosting */
    @Required

 */
public class CorsFilter implements Filter {

    /**
     * Creates a new instance of CorsFilter.
     */
    public CorsFilter() {
        // Default constructor
    }

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

    /**
     * HTTP OPTIONS method constant used for CORS preflight requests.
     */

    @Override
    protected BiMap<String, String> create(Entry<String, String>[] entries) {
      return ImmutableBiMap.copyOf(asList(entries));
    }
  }

  /**
   * Useless constructor for a class of static utility methods.
   *
   * @deprecated Do not instantiate this utility class.
   */
  @Deprecated
  public BiMapGenerators() {}

 */
@GwtCompatible
public abstract class ForwardingSortedSetMultimap<
        K extends @Nullable Object, V extends @Nullable Object>
    extends ForwardingSetMultimap<K, V> implements SortedSetMultimap<K, V> {

  /** Constructor for use by subclasses. */
  protected ForwardingSortedSetMultimap() {}

  @Override
  protected abstract SortedSetMultimap<K, V> delegate();

  @Override
  public SortedSet<V> get(@ParametricNullness K key) {

mvn verify                            # Generate coverage report
```

## Code Conventions

### Class Structure

- **Utility classes**: `abstract` class + `protected` constructor
- **Constants classes**: Same pattern

### Argument Validation

Use `AssertionUtil` at method entry:
- `AssertionUtil.assertArgumentNotNull("argName", value)`

/**
 * URL handler for SMB1 protocol URLs.
 */
public class Handler extends URLStreamHandler {

    static final URLStreamHandler SMB_HANDLER = new Handler();

    /**
     * Default constructor for SMB1 URL handler.
     */
    public Handler() {
    }

    @Override
    protected int getDefaultPort() {
        return SmbConstants.DEFAULT_PORT;
    }

    @Override