List<MetadataGraphEdge> ins = getIncidentEdges(v);
            if (ins != null) {
                for (MetadataGraphEdge e : ins) {
                    sb.append("       from :  ").append(e.toString()).append('\n');
                }
            } else {
                sb.append("      no entries\n");
            }

            List<MetadataGraphEdge> outs = getExcidentEdges(v);

    private MetadataGraphEdge cleanEdges(
            MetadataGraphVertex v, List<MetadataGraphEdge> edges, ArtifactScopeEnum scope) {
        if (edges == null || edges.isEmpty()) {
            return null;
        }

        if (edges.size() == 1) {
            MetadataGraphEdge e = edges.get(0);
            if (scope.encloses(e.getScope())) {

    /**
     * newer artifact is selected
     */
    @Configuration(name = "newer-first", value = "true")
    private boolean newerFirst = true;

    @Override
    public MetadataGraphEdge apply(MetadataGraphEdge e1, MetadataGraphEdge e2) {
        int depth1 = e1.getDepth();
        int depth2 = e2.getDepth();

        if (depth1 == depth2) {
            ArtifactVersion v1 = new DefaultArtifactVersion(e1.getVersion());

                return;
            }

            cpc.add(md);

            List<MetadataGraphEdge> exits = graph.getExcidentEdges(node);

            if (exits != null && !exits.isEmpty()) {
                MetadataGraphEdge[] sortedExits = exits.toArray(new MetadataGraphEdge[0]);
                Arrays.sort(sortedExits, (e1, e2) -> {
                    if (e1.getDepth() == e2.getDepth()) {