public final ServerMessageBlock getAndx() {
        return this.andx;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb1.ServerMessageBlock#getNext()
     */
    @Override
    public ServerMessageBlock getNext() {
        return this.andx;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockResponse#getNextResponse()
     */

        if (timeoutTaskList.isEmpty()) {
            return expiredTask;
        }
        for (SLinkedList<TimeoutTask>.Entry e = timeoutTaskList.getFirstEntry(); e != null; e = e.getNext()) {
            final TimeoutTask task = e.getElement();
            if (task.isCanceled()) {
                e.remove();
            } else if (!task.isStopped() && task.isExpired()) {

        assertEquals(mockAndxCommand, testBlock.getNext());
        assertEquals(mockAndxCommand, testBlock.getNextResponse());
    }

    @Test
    @DisplayName("Test constructor without andx command")
    void testConstructorWithoutAndx() {
        testBlock = new TestAndXServerMessageBlock(mockConfig, (byte) 0x25);

        assertNull(testBlock.getAndx());
        assertNull(testBlock.getNext());

4. **Add tests**: Unit + integration

### Adding a Content Extractor

1. **Implement `Extractor`**:
```java
public class MyExtractor extends AbstractExtractor {
    @Override
    public ExtractData getText(InputStream in, Map<String, String> params) {
        ExtractData data = new ExtractData();
        // Extract text
        data.setContent(extractedText);
        return data;
    }
}
```

        tasks.register("checkstyleApi", Checkstyle.class, task -> {
            task.source(extension.getDocumentedSource());
            // TODO: This is ugly
            task.setConfig(project.getResources().getText().fromFile(checkstyle.getConfigDirectory().file("checkstyle-api.xml")));
            task.setClasspath(layout.files());

            Response curResp = response;
            Request curReq = request;
            while (curResp != null) {
                this.response_map.remove(curResp.getMid());
                final Request next = curReq.getNext();
                if (next == null) {
                    break;
                }
                curReq = next;
                curResp = next.getResponse();
            }
        }
    }

          V oldValue = (V) values[entryIndex];

          values[entryIndex] = value;
          accessEntry(entryIndex);
          return oldValue;
        }
        next = CompactHashing.getNext(entry, mask);
        bucketLength++;
      } while (next != UNSET);

      if (bucketLength >= MAX_HASH_BUCKET_LENGTH) {
        return convertToHashFloodingResistantImplementation().put(key, value);
      }

     *
     * @see jcifs.internal.CommonServerMessageBlockResponse#getNextResponse()
     */
    @Override
    public CommonServerMessageBlockResponse getNextResponse() {
        return (CommonServerMessageBlockResponse) getNext();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockResponse#prepare(jcifs.internal.CommonServerMessageBlockRequest)
     */
    @Override

        // simple bean? assumes string constructor
        if (parser.next() == XmlPullParser.TEXT) {
            final String text = parser.getText();

            // confirm element doesn't contain nested XML
            if (parser.next() != XmlPullParser.START_TAG) {
                return convertText(text, clazz == rawType ? toType : TypeLiteral.get(clazz));

    Iterator<String> iterator = singletonList("foo").iterator();
    assertEquals("foo", Iterators.getNext(iterator, "bar"));
  }

  public void testGetNext_withDefault_empty() {
    Iterator<String> iterator = emptyIterator();
    assertEquals("bar", Iterators.getNext(iterator, "bar"));
  }

  public void testGetNext_withDefault_empty_null() {