final Object result;
    final Throwable throwable;

    Response(String methodName, @Nullable Object result, @Nullable Throwable throwable) {
      this.methodName = methodName;
      this.result = result;
      this.throwable = throwable;
    }

    Object getResult() {
      if (throwable != null) {
        throw new AssertionError(throwable);
      }
      return result;
    }

   * returns the expected data.
   *
   * @throws Throwable if the listener isn't called or if it resulted in a throwable or if the
   *     result doesn't match the expected value.
   */
  public void assertSuccess(Object expectedData) throws Throwable {
    // Verify that the listener executed in a reasonable amount of time.
    Assert.assertTrue(countDownLatch.await(1L, SECONDS));

        this(message, null, null);
    }

    public MetadataRetrievalException(Throwable cause) {
        this(null, cause, null);
    }

    public MetadataRetrievalException(String message, Throwable cause) {
        this(message, cause, null);
    }

    public MetadataRetrievalException(String message, Throwable cause, ArtifactMetadata artifact) {
        super(message, cause);

        this.artifact = artifact;

abstract class InterruptibleTask<T extends @Nullable Object> implements Runnable {

  @Override
  public void run() {
    T result = null;
    Throwable error = null;
    if (isDone()) {
      return;
    }
    try {
      result = runInterruptibly();
    } catch (Throwable t) {
      error = t;
    }
    if (error == null) {
      // The cast is safe because of the `run` and `error` checks.

  // have completed and we have processed them all.
  @CheckForNull private volatile Set<Throwable> seenExceptions = null;

  private volatile int remaining;

  private static final AtomicHelper ATOMIC_HELPER;

  private static final LazyLogger log = new LazyLogger(AggregateFutureState.class);

  static {
    AtomicHelper helper;
    Throwable thrownReflectionFailure = null;
    try {
      helper =
          new SafeAtomicHelper(

    public boolean isWarnEnabled() {
        return false;
    }

    public void warn(String msg) {}

    public void warn(String format, Object arg) {}

    public void warn(String format, Object... arguments) {}

    public void warn(String format, Object arg1, Object arg2) {}

    public void warn(String msg, Throwable t) {}

    public boolean isWarnEnabled(Marker marker) {

    protected final int numberOfInputDocs;
    protected final boolean hasError;
    protected final List<Throwable> errors = new ArrayList<>();
    protected final long took;

    protected SuggestIndexResponse(final int numberOfSuggestDocs, final int numberOfInputDocs, final List<Throwable> errors,
            final long took) {
        this.numberOfSuggestDocs = numberOfSuggestDocs;

  // & this future completes. Released when the future releases the reference to the running state
  private @Nullable Set<Throwable> seenExceptions = null;
  private int remaining;

  AggregateFutureState(int remainingFutures) {
    this.remaining = remainingFutures;
  }

  final Set<Throwable> getOrInitSeenExceptions() {
    if (seenExceptions == null) {
      seenExceptions = newHashSet();

    }

    public void reject(final Throwable t) {
        final ArrayList<Consumer<Throwable>> executeCallbacks;
        synchronized (Deferred.this) {
            if (response != null || error != null) {
                return;
            }
            error = t;

            executeCallbacks = new ArrayList<>(errorCallbacks.size());
            Consumer<Throwable> callback;

    }

    public ModelParserException(String message, Throwable cause) {
        this(message, -1, -1, cause);
    }

    public ModelParserException(String message, int lineNumber, int columnNumber, Throwable cause) {
        super(message, cause);
        this.lineNumber = lineNumber;
        this.columnNumber = columnNumber;
    }

    public ModelParserException(Throwable cause) {
        this(null, cause);
    }