```java
public class CustomExtractor extends AbstractExtractor {
    @Override
    public ExtractData getText(final InputStream inputStream, final Map<String, String> params) {
        // Custom extraction logic
        ExtractData extractData = new ExtractData();
        // ... implementation
        return extractData;
    }
}

// Register custom extractor

        return redirect(getClass());
    }

    // ===================================================================================
    //                                                                        Assist Logic
    //                                                                        ============
    private static OptionalEntity<BadWord> getEntity(final CreateForm form, final String username, final long currentTime) {

 * validate batching, chaining, signing, and NT_CREATE_ANDX extended handling.
 */
class AndXServerMessageBlockTest {

    /**
     * Test stub for AndXServerMessageBlock to control read/write logic.
     */
    static class DummyAndXBlock extends AndXServerMessageBlock {
        int paramWordsWritten = 0;
        int bytesWritten = 0;
        int paramWordsRead = 0;
        int bytesRead = 0;

     */
    I sourceResult;
    try {
      sourceResult = getDone(localInputFuture);
    } catch (CancellationException e) {
      // TODO(user): verify future behavior - unify logic with getFutureValue in AbstractFuture. This
      // code should be unreachable with correctly implemented Futures.
      // Cancel this future and return.

   */
  /*
   * TODO: improve this and other implementations and move out of this framework
   * for wider use
   *
   * TODO: could we incorporate the overriding logic from AbstractListTester, by
   * examining whether the features include KNOWN_ORDER?
   */
  protected void expectContents(Collection<E> expected) {
    assertEqualIgnoringOrder(expected, actualContents());
  }

      }

      /*
       * We use this only when getTypeName is available.
       *
       * Well, really, we use this when we think we're running under Java 8, as determined by some
       * logic in the static initializer, which does not check for getTypeName specifically. We
       * should really validate that it works as desired for all Android versions that we support.
       */

 * </ul>
 *
 * <p>Note that detection of potential deadlock does not necessarily indicate that deadlock will
 * happen, as it is possible that higher level application logic prevents the cyclic lock
 * acquisition from occurring. One example of a false positive is:
 *
 * <pre>
 * LockA -&gt; LockB -&gt; LockC
 * LockA -&gt; LockC -&gt; LockB
 * </pre>
 *

        return redirect(getClass());
    }

    //===================================================================================
    //                                                                        Assist Logic
    //                                                                        ============
    /**
     * Gets a file authentication entity based on the form and current user info.
     *

        return redirect(getClass());
    }

    // ===================================================================================
    //                                                                        Assist Logic
    //                                                                        ============
    /**
     * Creates a RequestHeader entity from form data with user and timestamp information.
     *

        return redirect(getClass());
    }

    // ===================================================================================
    //                                                                        Assist Logic
    //                                                                        ============
    /**
     * Gets a group entity based on the form.
     *
     * @param form the create form