}
            }
        }
        if (!exceptions.isEmpty()) {
            IllegalStateException ex = new IllegalStateException("Could not close commandRegistries");
            exceptions.forEach(ex::addSuppressed);
            throw ex;
        }
    }

   * 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) {
          /*

            }
        }
        if (!exceptions.isEmpty()) {
            InvokerException exception = new InvokerException("Could not cleanly shut down context pool");
            exceptions.forEach(exception::addSuppressed);
            throw exception;
        }
    }

    @Override
    protected MavenContext createContext(InvokerRequest invokerRequest) {

        openKotlinCompilationUnitsByRoot.clear()
        if (errors.isNotEmpty()) {
            throw Exception("Sources repository did not close cleanly").apply {
                errors.forEach(this::addSuppressed)
            }
        }
    }

    /**
     * @return the source file and it's source root
     */
    fun sourceFileAndSourceRootFor(sourceFilePath: String): Pair<File, File> =

                }
            }
        }
        if (causes != null) {
            InvokerException exception = new InvokerException("Unable to close context");
            causes.forEach(exception::addSuppressed);
            throw exception;
        }
    }

    public final void closeContainer() throws Exception {
        if (containerCapsuleManaged) {
            doCloseContainer();
        }
    }

            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)) {