* addSuppressed(Throwable) mechanism.
   */
  private static final Suppressor SUPPRESSING_SUPPRESSOR =
      (closeable, thrown, suppressed) -> {
        // ensure no exceptions from addSuppressed
        if (thrown == suppressed) {
          return;
        }
        try {
          thrown.addSuppressed(suppressed);
        } catch (Throwable e) {
          /*

            IllegalStateException mavenDiFailed = new IllegalStateException(
                    "Maven dependency injection failed for at least one of the registered core extension");
            failures.forEach(mavenDiFailed::addSuppressed);
            throw mavenDiFailed;
        }
        container.getLoggerManager().setThresholds(toPlexusLoggingLevel(context.loggerLevel));
        customizeContainer(context, container);

        val addresses = Dns.SYSTEM.lookup(hostname)
        listOf(addresses[0])
      }

    private operator fun Throwable?.plus(throwable: Throwable): Throwable {
      if (this != null) {
        addSuppressed(throwable)
        return this
      }
      return throwable
    }
  }

   */
  private void assertSuppressed(Suppression... expected) {
    assertEquals(ImmutableList.copyOf(expected), suppressor.suppressions);
  }

  // TODO(cpovirk): Just use addSuppressed+getSuppressed now that we can rely on it.
  /** Suppressor that records suppressions. */
  private static class TestSuppressor implements Closer.Suppressor {

   */
  private void assertSuppressed(Suppression... expected) {
    assertEquals(ImmutableList.copyOf(expected), suppressor.suppressions);
  }

  // TODO(cpovirk): Just use addSuppressed+getSuppressed now that we can rely on it.
  /** Suppressor that records suppressions. */
  private static class TestSuppressor implements Closer.Suppressor {

internal fun <E> MutableList<E>.addIfAbsent(element: E) {
  if (!contains(element)) add(element)
}

internal fun Exception.withSuppressed(suppressed: List<Exception>): Throwable =
  apply {
    for (e in suppressed) addSuppressed(e)
  }

internal inline fun <T> Iterable<T>.filterList(predicate: T.() -> Boolean): List<T> {
  var result: List<T> = emptyList()
  for (i in this) {
    if (predicate(i)) {

        RuntimeCIFSException mainException = new RuntimeCIFSException("Main error");
        RuntimeException suppressedException = new RuntimeException("Suppressed error");

        // When
        mainException.addSuppressed(suppressedException);

        // Then
        Throwable[] suppressed = mainException.getSuppressed();
        assertEquals(1, suppressed.length);
        assertEquals(suppressedException, suppressed[0]);
    }

        ResultOffsetExceededException suppressedException = new ResultOffsetExceededException("Suppressed exception");

        mainException.addSuppressed(suppressedException);

        Throwable[] suppressed = mainException.getSuppressed();
        assertNotNull(suppressed);
        assertEquals(1, suppressed.length);

        }
        logger.error("-----------------------------------------")
        GradleException toThrow = new GradleException(msg)
        for (Exception e : suppressed) {
            toThrow.addSuppressed(e)
        }
        throw toThrow
    }

    /** Adds a task to kill an elasticsearch node with the given pidfile */
    private TaskProvider<AntFixtureStop> createStopTask() {

        } catch (final IOException ioe) {
            log.warn("sendrecv failed", ioe);
            try {
                disconnect(true);
            } catch (final IOException ioe2) {
                ioe.addSuppressed(ioe2);
                log.info("disconnect failed", ioe2);
            }
            throw ioe;
        } catch (final InterruptedException ie) {
            throw new TransportException(ie);
        } finally {