*   <li>Each other step is derived from one or more input steps. At each step, zero or more objects
 *       can be captured for later closing.
 *   <li>There is one last step (the root of the tree), from which you can extract the final result
 *       of the computation. After that result is available (or the computation fails), all objects
 *       captured by any of the steps in the pipeline are closed.
 * </ol>
 *
 * <h3>Starting a pipeline</h3>
 *

    assertAssignable(
        TypeToken.of(new TypeCapture<L>() {}.capture()),
        TypeToken.of(new TypeCapture<L>() {}.capture()));
    assertNotAssignable(
        TypeToken.of(new TypeCapture<R>() {}.capture()),
        TypeToken.of(new TypeCapture<L>() {}.capture()));
    assertAssignable(TypeToken.of(new TypeCapture<L>() {}.capture()), new TypeToken<List<R>>() {});
  }

  public void testisSupertypeOf_resolved() {

        while ((event = queue.poll()) != null) {
            events.add(event);
            size.decrementAndGet();
        }
        return events;
    }

    /**
     * Represents a captured log event for notification.
     */
    public static class LogNotificationEvent {

        private final long timestamp;

        private final String level;

        private final String loggerName;

        final StringBuilder captured = new StringBuilder();

        client.setStreamChatCapture((request, callback) -> {
            // Capture the system message
            for (final LlmMessage msg : request.getMessages()) {
                if ("system".equals(msg.getRole())) {
                    captured.append(msg.getContent());
                }
            }

    assertAssignable(
        TypeToken.of(new TypeCapture<L>() {}.capture()),
        TypeToken.of(new TypeCapture<L>() {}.capture()));
    assertNotAssignable(
        TypeToken.of(new TypeCapture<R>() {}.capture()),
        TypeToken.of(new TypeCapture<L>() {}.capture()));
    assertAssignable(TypeToken.of(new TypeCapture<L>() {}.capture()), new TypeToken<List<R>>() {});
  }

  public void testisSupertypeOf_resolved() {

        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    @Test
    public void test_stackTrace() {
        // Test that stack trace is properly captured
        SsoLoginException exception = new SsoLoginException("Stack trace test");
        StackTraceElement[] stackTrace = exception.getStackTrace();

        assertNotNull(stackTrace);

        final LogNotificationAppender warnAppender = LogNotificationAppender.createAppender("testWarn", "WARN", null, null);
        final LogEvent event = createLogEvent(Level.ERROR, "org.codelibs.fess.test", "error captured by warn appender");
        warnAppender.append(event);
        final List<LogNotificationEvent> events = ComponentUtil.getLogNotificationHelper().drainAll();
        assertEquals(1, events.size());

                    customThreadFound.incrementAndGet();
                }
            };

            ThreadDumpUtil.processThreadDump(searchConsumer);

            // Verify that our custom thread was captured
            assertTrue("Should find custom thread in dump", customThreadFound.get() > 0);

        } finally {
            latch.countDown();

        // Execute
        final InvalidQueryException exception = new InvalidQueryException(messageCode, message, cause);

        // Verify stack trace is captured
        assertNotNull(exception.getStackTrace());
        assertTrue(exception.getStackTrace().length > 0);
    }

    @Test
    public void test_differentMessageCodes() {

### Dependencies with `yield` and `except`, Technical Details { #dependencies-with-yield-and-except-technical-details }

Before FastAPI 0.110.0, if you used a dependency with `yield`, and then you captured an exception with `except` in that dependency, and you didn't raise the exception again, the exception would be automatically raised/forwarded to any exception handlers or the internal server error handler.