protected void checkVersion(SubMonitor subMonitor)
throws SarosCancellationException {
log.debug("Inv" + Utils.prefix(peer) + ": Checking peer's version...");
subMonitor.setTaskName("Checking version...");
VersionInfo versionInfo = versionManager.determineCompatibility(peer);
checkCancellation(CancelOption.DO_NOT_NOTIFY_PEER);
Compatibility comp = null;