if (tree == null) {
            throw new MetadataResolutionException("tree is null");
        }

        setVersionedVertices(versionedVertices);
        setScopedVertices(scopedVertices);

        this.versionedVertices = scopedVertices || versionedVertices;
        this.scopedVertices = scopedVertices;

        int count = countNodes(tree);

            final ArtifactScopeEnum requestedScope = ArtifactScopeEnum.checkScope(scope);

            MetadataGraph res = new MetadataGraph(vertices.size());
            res.setVersionedVertices(false);
            res.setScopedVertices(false);

            MetadataGraphVertex resEntry = res.addVertex(entry.getMd());
            res.setEntry(resEntry);

            res.setScope(requestedScope);