int netId = dirtyIterator.next();
EntityRef entity = networkSystem.getEntity(netId);
if (isOwned(entity)) {
Set<Class<? extends Component>> emptyComponentClassSet = Collections.emptySet();
EntityData.PackedEntity entityData = entitySerializer.serialize(entity, emptyComponentClassSet, changedComponents.get(netId),
emptyComponentClassSet, new ClientComponentFieldCheck());
if (entityData != null) {
message.addUpdateEntity(NetData.UpdateEntityMessage.newBuilder().setEntity(entityData).setNetId(netId));
}
}
}