void awaitTerminated(long timeout, TimeUnit unit) throws TimeoutException;

  /**
   * Returns the {@link Throwable} that caused this service to fail.
   *
   * @throws IllegalStateException if this service's state isn't {@linkplain State#FAILED FAILED}.
   * @since 14.0
   */
  Throwable failureCause();

  /**
   * Registers a {@link Listener} to be {@linkplain Executor#execute executed} on the given

  private static final Logger logger = Logger.getLogger(SloppyTearDown.class.getName());

  @Override
  public final void tearDown() {
    try {
      sloppyTearDown();
    } catch (Throwable t) {
      logger.log(Level.INFO, "exception thrown during tearDown: " + t.getMessage(), t);
    }
  }

  public abstract void sloppyTearDown() throws Exception;

        }
    }

    /**
     * Gets a detailed message of the throwable.
     * @param t The throwable.
     * @return The detailed message.
     */
    protected String detailedMessage(final Throwable t) {
        if (t == null) {
            return "Unknown";
        }
        Throwable target = t;
        if (target.getCause() == null) {

     *
     * @param message the detail message describing the configuration error
     * @param cause the cause of the exception
     */
    public GsaConfigException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new GSA configuration exception with the specified detail message.
     *

     */
    NPE_IAE_OR_UOE() {
      @Override
      public boolean isExpectedType(Throwable cause) {
        return cause instanceof NullPointerException
            || cause instanceof IllegalArgumentException
            || cause instanceof UnsupportedOperationException;
      }
    };

    abstract boolean isExpectedType(Throwable cause);
  }

  private static boolean annotatedTypeExists() {
    try {

                assertNotNull(result);
            } catch (Exception e) {
                // Expected behavior when components are not fully initialized
                Throwable cause = e.getCause();
                assertNotNull(cause);
            }
        } catch (Exception e) {
            // Test setup exception is acceptable
            assertNotNull(e);
        }
    }

     * This prevents stack trace generation for this exception type.
     *
     * @return null to skip stack trace generation
     */
    @Override
    public synchronized Throwable fillInStackTrace() {
        return null;
    }

public class AccumulatingLogger implements Logger {
    private final AtomicReference<List<Entry>> entries = new AtomicReference<>(new CopyOnWriteArrayList<>());

    @Override
    public void log(Level level, String message, Throwable error) {
        requireNonNull(level, "level");
        requireNonNull(message, "message");
        entries.get().add(new Entry(level, message, error));
    }

    @Override
    public List<Entry> drain() {

   *
   * <p>If the future's {@link Future#get() get} method throws an {@link ExecutionException}, then
   * the cause is passed to this method. Any other thrown object is passed unaltered.
   */
  void onFailure(Throwable t);

      supplier =
          new Supplier<LongAddable>() {
            @Override
            public LongAddable get() {
              return new LongAdder();
            }
          };
    } catch (Throwable t) { // we really want to catch *everything*
      supplier =
          new Supplier<LongAddable>() {
            @Override
            public LongAddable get() {
              return new PureJavaLongAddable();