if (cleanGraph == null || cleanGraph.isEmpty()) {
                return null;
            }

            ClasspathContainer cpc = new ClasspathContainer(scope);
            if (cleanGraph.isEmptyEdges()) {
                // single entry in the classpath, populated from itself
                ArtifactMetadata amd = cleanGraph.getEntry().getMd();
                cpc.add(amd);
            } else {

            return null;
        }

        if (graph.isEmpty()) {
            throw new GraphConflictResolutionException("graph with an entry, but not vertices do not exist");
        }

        if (graph.isEmptyEdges()) {
            return null; // no edges - nothing to worry about
        }

        final TreeSet<MetadataGraphVertex> vertices = graph.getVertices();

        try {
            // edge case - single vertex graph