}
    }
  }

  /*
   * Now that we've initialized everything else, we can run the initialization code for
   * ATOMIC_HELPER. That initialization code may log after we assign to ATOMIC_HELPER.
   */

  private static final AtomicHelper ATOMIC_HELPER;

  static {
    AtomicHelper helper;
    Throwable thrownUnsafeFailure = null;
    Throwable thrownAtomicReferenceFieldUpdaterFailure = null;

      }
    }
  }

  /*
   * Now that we've initialized everything else, we can run the initialization code for
   * ATOMIC_HELPER. That initialization code may log after we assign to ATOMIC_HELPER.
   */

  private static final AtomicHelper ATOMIC_HELPER;

  static {
    AtomicHelper helper;
    Throwable thrownUnsafeFailure = null;
    Throwable thrownAtomicReferenceFieldUpdaterFailure = null;

  final int decrementRemainingAndGet() {
    return ATOMIC_HELPER.decrementAndGetRemainingCount(this);
  }

  final void clearSeenExceptions() {
    seenExceptionsField = null;
  }

  @VisibleForTesting
  static String atomicHelperTypeForTest() {
    return ATOMIC_HELPER.atomicHelperTypeForTest();
  }

  private abstract static class AtomicHelper {

    Class<?> aggregateFutureStateClass =
        classLoader.loadClass(AggregateFutureState.class.getName());
    Field helperField = aggregateFutureStateClass.getDeclaredField("ATOMIC_HELPER");
    helperField.setAccessible(true);
    assertEquals(expectedHelperClassName, helperField.get(null).getClass().getSimpleName());
  }

  private static ClassLoader getClassLoader(Set<String> blocklist) {