}
                    if (lifecycleOverlay == null) {
                        Optional<Lifecycle> lf = lifecycles.lookup(forkedLifecycle);
                        if (lf.isPresent()) {
                            lifecycle = lf.get();
                        } else {
                            throw new MavenException(new LifecycleNotFoundException(forkedLifecycle));

      ListenableFuture<? extends V>... futures) {
    /*
     * Another way to express this signature would be to bound <V> by @NonNull and accept
     * LF<? extends @Nullable V>. That might be better: There's currently no difference between the
     * outputs users get when calling this with <Foo> and calling it with <@Nullable Foo>. The only