}

    @Override
    public Iterator<ResolvedArtifactResult> iterator() {
        ensureResolved();
        return result.get().artifactResults.iterator();
    }

    @Override
    public Collection<Throwable> getFailures() {
        ensureResolved();
        return result.get().failures;
    }

    @Override
    public void visitArtifacts(ArtifactVisitor visitor) {