xfr_serial_means_update
if(has_serial && !xfr_serial_means_update(xfr, serial)) {
xfr_serial_means_update(xfr, xfr->notify_serial)))) {
if(xfr_serial_means_update(xfr, serial)) {
if(has_serial && !xfr_serial_means_update(xfr, serial)) {
xfr_serial_means_update(xfr, xfr->notify_serial)))) {
if(xfr_serial_means_update(xfr, serial)) {