in src/main/java/com/googlesource/gerrit/plugins/pubsub/PubSubEventSubscriber.java [89:97]
public void shutdown() {
try {
subscriber
.stopAsync()
.awaitTerminated(config.getShutdownTimeoutInSeconds(), TimeUnit.SECONDS);
} catch (TimeoutException e) {
logger.atSevere().withCause(e).log("Timeout during subscriber shutdown");
}
}