Class<? extends RootAction> actionClass2 = exception2.getActionClass();
            assertNotNull(actionClass2);

            // No ClassCastException should occur
        } catch (ClassCastException e) {
            fail("ClassCastException should not occur: " + e.getMessage());
        }
    }

    @Test
    public void test_genericTypeSafety_verifyInheritance() {

        TermQuery termQuery3 = new TermQuery(new Term("field3", "value3"));

        boolQueryBuilder.add(termQuery1, BooleanClause.Occur.MUST);
        boolQueryBuilder.add(termQuery2, BooleanClause.Occur.SHOULD);
        boolQueryBuilder.add(termQuery3, BooleanClause.Occur.MUST_NOT);
        BooleanQuery booleanQuery = boolQueryBuilder.build();

        QueryContext context = new QueryContext("test", false);

        .that(input)
        .isNotInstanceOf(ListenableFuture.class);
    ListenableFuture<String> listenable = listenInPoolThread(input);
    /*
     * This will occur before the waiting get() in the
     * listenInPoolThread-spawned thread completes:
     */
    RecordingRunnable earlyListener = new RecordingRunnable();
    listenable.addListener(earlyListener, directExecutor());

        } catch (JobProcessingException e) {
            assertTrue(e.getMessage().contains("Thumbnail Process terminated."));
        } catch (NullPointerException e) {
            // May occur if ServletContext is not fully initialized
            // This is acceptable in test environment
        }
    }

    // Test executeThumbnailGenerator with timeout
    @Test

        .that(input)
        .isNotInstanceOf(ListenableFuture.class);
    ListenableFuture<String> listenable = listenInPoolThread(input);
    /*
     * This will occur before the waiting get() in the
     * listenInPoolThread-spawned thread completes:
     */
    RecordingRunnable earlyListener = new RecordingRunnable();
    listenable.addListener(earlyListener, directExecutor());

    awaitTermination(t, LONG_DELAY_MS);
  }

  // Some convenient Runnable classes

  // These classes don't merely allow checked exceptions but also store any exceptions that occur
  // so that we can then report them during tearDown.

  abstract class CheckedRunnable implements Runnable {
    abstract void realRun() throws Throwable;

    @Override
    public final void run() {

   * e]}.
   */
  @Override
  String toString();

  // Refined Collection Methods

  /**
   * {@inheritDoc}
   *
   * <p>Elements that occur multiple times in the multiset will appear multiple times in this
   * iterator, though not necessarily sequentially.
   */
  @Override
  Iterator<E> iterator();

  /**

   * {@code directExecutor} functions should avoid heavyweight operations inside {@code
   * AsyncFunction.apply}. Any heavyweight operations should occur in other threads responsible for
   * completing the returned {@code Future}.)
   *
   * <p>This method is similar to {@link java.util.concurrent.CompletableFuture#exceptionally}. It

 * specified the JVM flag {@code -XX:+DisableExplicitGC}. But in practice, it works very well for
 * ordinary tests.
 *
 * <p>Failure of the expected event to occur within an implementation-defined "reasonable" time
 * period or an interrupt while waiting for the expected event will result in a {@link
 * RuntimeException}.
 *
 * <p>Here's an example that tests a {@code finalize} method:

    awaitTermination(t, LONG_DELAY_MS);
  }

  // Some convenient Runnable classes

  // These classes don't merely allow checked exceptions but also store any exceptions that occur
  // so that we can then report them during tearDown.

  abstract class CheckedRunnable implements Runnable {
    abstract void realRun() throws Throwable;

    @Override
    public final void run() {