md->facetrule = nmem_strdup_null(nmem, facetrule);
md->limitmap = nmem_strdup_null(nmem, limitmap);
md->limitcluster = nmem_strdup_null(nmem, limitcluster);
md->facetrule = nmem_strdup_null(nmem, facetrule);
md->limitmap = nmem_strdup_null(nmem, limitmap);
md->limitcluster = nmem_strdup_null(nmem, limitcluster);