// Default constructor
    }

    /**
     * Creates an OptionalEntity from a nullable entity.
     *
     * @param <T> the type of the entity
     * @param entity the entity (can be null)
     * @return the OptionalEntity
     */
    public static <T> OptionalEntity<T> ofNullable(final T entity) {
        return OptionalEntity.ofNullable(entity, () -> {});
    }

public class InvalidParameterException extends InvalidPluginDescriptorException {
    public InvalidParameterException(String element, int i) {
        super("The " + element + " element in parameter # " + i + " is invalid. It cannot be null.");
    }

    public InvalidParameterException(String message, Throwable cause) {
        super(message, cause);
    }

        assertEquals(0, response.getDataCount());
    }

    @Test
    @DisplayName("Test entry management")
    void testEntryManagement() {
        // Test with null entries
        response.setResults(null);
        assertNull(response.getResults());

        // Test with empty entries
        FileEntry[] emptyEntries = new FileEntry[0];
        response.setResults(emptyEntries);

    }

    /**
     * Test that null URL queue is handled gracefully
     */
    public void test_nullUrlQueue() {
        final HostIntervalController controller = new HostIntervalController();
        controller.delayMillisBeforeProcessing = 1000L;

        CrawlingParameterUtil.setUrlQueue(null);

        final long start = System.nanoTime();

        default -> "0x" + Hexdump.toHexString(this.questionType, 4);
        };
        recordTypeString = switch (this.recordType) {
        case A -> "A";
        case NS -> "NS";
        case NULL -> "NULL";
        case NB -> "NB";
        case NBSTAT -> "NBSTAT";
        default -> "0x" + Hexdump.toHexString(this.recordType, 4);
        };

     */
    protected boolean isSearchField(final String field) {
        final QueryFieldConfig config = getQueryFieldConfig();
        return config.searchFieldSet != null && config.searchFieldSet.contains(field);
    }

    /**
     * Gets the query languages from the current request.
     * @return An optional containing the query languages array, or empty if not available.
     */

        default -> "0x" + Hexdump.toHexString(questionType, 4);
        };
        recordTypeString = switch (recordType) {
        case A -> "A";
        case NS -> "NS";
        case NULL -> "NULL";
        case NB -> "NB";
        case NBSTAT -> "NBSTAT";
        default -> "0x" + Hexdump.toHexString(recordType, 4);
        };

    fakePool = new FakeExecutor();
    e = new SequentialExecutor(fakePool);
  }

  public void testConstructingWithNullExecutor_fails() {
    assertThrows(NullPointerException.class, () -> new SequentialExecutor(null));
  }

  public void testBasics() {
    AtomicInteger totalCalls = new AtomicInteger();
    Runnable intCounter =
        new Runnable() {
          @Override
          public void run() {

 */

public class SmbAuthException extends SmbException {

    SmbAuthException(final int errcode) {
        super(errcode, null);
    }

     * @param args
     *            Array of arguments
     */
    public EmptyArgumentException(final String argName, final String messageCode, final Object[] args) {
        this(argName, messageCode, args, null);
    }

    /**
     * Creates an {@link EmptyArgumentException}.
     *
     * @param argName
     *            Name of the argument
     * @param messageCode
     *            Message code