docs: public static Function<Quad, Quad> unskolemizeQuads(final ResourceService svc, final String baseUrl) {
          return quad -> rdf.createQuad(quad.getGraphName().orElse(PreferUserManaged),
                      (BlankNodeOrIRI) svc.toExternal(svc.unskolemize(quad.getSubject()), baseUrl),
                      quad.getPredicate(), svc.toExternal(svc.unskolemize(quad.getObject()), baseUrl));
      }