final FrontendIdentifier frontend = cohort.getIdentifier().getHistoryId().getClientId().getFrontendId();
final LeaderFrontendState state = knownFrontends.get(frontend);
if (state == null) {
// Not tell-based protocol, do nothing
final FrontendIdentifier frontend = cohort.getIdentifier().getHistoryId().getClientId().getFrontendId();
final LeaderFrontendState state = knownFrontends.get(frontend);
if (state == null) {
// Not tell-based protocol, do nothing