in pekko-sample-distributed-data-java/src/main/java/sample/distributeddata/ReplicatedMetrics.java [178:186]
private Behavior<Command> onInternalSubscribeResponse(InternalSubscribeResponse rsp) {
SubscribeResponse<LWWMap<String, Long>> rsp1 = rsp.rsp;
if (rsp1 instanceof Changed && rsp1.key().equals(maxHeapKey)) {
receiveMaxHeapChanged((Changed<LWWMap<String, Long>>) rsp1);
} else if (rsp1 instanceof Changed && rsp1.key().equals(usedHeapKey)) {
receiveUsedHeapChanged((Changed<LWWMap<String, Long>>) rsp1);
}
return this;
}