ImmutableList.Builder<AbstractFuture<T>> delegatesBuilder =
        ImmutableList.builderWithExpectedSize(copy.length);
    for (int i = 0; i < copy.length; i++) {
      delegatesBuilder.add(new InCompletionOrderFuture<T>(state));
    }

    final ImmutableList<AbstractFuture<T>> delegates = delegatesBuilder.build();
    for (int i = 0; i < copy.length; i++) {