}

            return null;
        }

        MetadataGraphEdge res = null;

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

            if (res == null) {
                res = e;
            } else {
                res = policy.apply(e, res);
            }
        }

        return res;
    }