assertTrue(exception.getStackTrace().length > 0);

        // Verify that this test method appears in the stack trace
        boolean foundTestMethod = false;
        for (StackTraceElement element : exception.getStackTrace()) {
            if ("test_stackTrace".equals(element.getMethodName())) {
                foundTestMethod = true;
                break;
            }
        }

        });
    thread.start();

    boolean done = doneSignal.await(1, SECONDS);
    if (!done) {
      StringBuilder builder = new StringBuilder();
      for (StackTraceElement trace : thread.getStackTrace()) {
        builder.append("\tat ").append(trace).append('\n');
      }
      fail(builder.toString());
    }
  }

    private TimeoutFutureException(String message) {
      super(message);
    }

    @Override
    public synchronized Throwable fillInStackTrace() {
      setStackTrace(new StackTraceElement[0]);
      return this; // no stack trace, wouldn't be useful anyway
    }
  }

  @Override
  protected @Nullable String pendingToString() {

            // since suppression is disabled
        }

        // Stack trace should be empty since writableStackTrace is false
        StackTraceElement[] stackTrace = exception.getStackTrace();
        assertEquals(0, stackTrace.length);
    }

    public void test_serialization() {
        // Test that the exception has correct serialVersionUID

   *   at com...MyClass.someMethodThatAcquiresLockB(MyClass.java:123)
   * </pre>
   */
  private static class ExampleStackTrace extends IllegalStateException {

    static final StackTraceElement[] EMPTY_STACK_TRACE = new StackTraceElement[0];

    static final ImmutableSet<String> EXCLUDED_CLASS_NAMES =
        ImmutableSet.of(
            CycleDetectingLockFactory.class.getName(),
            ExampleStackTrace.class.getName(),

  }

  private static int findStackFrame(ExecutionException e, String clazz, String method) {
    StackTraceElement[] elements = e.getStackTrace();
    for (int i = 0; i < elements.length; i++) {
      StackTraceElement element = elements[i];
      if (element.getClassName().equals(clazz) && element.getMethodName().equals(method)) {
        return i;
      }
    }

  }

  private static int findStackFrame(ExecutionException e, String clazz, String method) {
    StackTraceElement[] elements = e.getStackTrace();
    for (int i = 0; i < elements.length; i++) {
      StackTraceElement element = elements[i];
      if (element.getClassName().equals(clazz) && element.getMethodName().equals(method)) {
        return i;
      }
    }

              }
            });
    thread.start();

    boolean done = doneSignal.await(1, SECONDS);
    if (!done) {
      StringBuilder builder = new StringBuilder();
      for (StackTraceElement trace : thread.getStackTrace()) {
        builder.append("\tat ").append(trace).append('\n');
      }
      fail(builder.toString());
    }
  }

  /**