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

            return null;
        }

        MetadataGraphEdge res = null;

        for (MetadataGraphEdge e : edges) {
            if (!scope.encloses(e.getScope())) {
                continue;
            }

            if (res == null) {

     * scope relationship function. Used by the graph conflict resolution policies
     *
     * @param scope a scope
     * @return true is supplied scope is an inclusive sub-scope of current one.
     */
    public boolean encloses(ArtifactScopeEnum scope) {
        final ArtifactScopeEnum s = checkScope(scope);

        // system scope is historic only - and simple
        if (id == system.id) {
            return scope.id == system.id;
        }