private void handleRemovedDB(Element spec, Tuning.SearchNode sn) {
        sn.removedDB = new Tuning.SearchNode.RemovedDB();
        for (Element e : XML.getChildren(spec)) {
            if (equals("prune", e)) {
                sn.removedDB.prune = new Tuning.SearchNode.RemovedDB.Prune();
                Tuning.SearchNode.RemovedDB.Prune prune = sn.removedDB.prune;
                for (Element e2 : XML.getChildren(e)) {
                    if (equals("age", e2)) {
                        prune.age = asDouble(e2);
                    } else if (equals("interval", e2)) {
                        prune.interval = asDouble(e2);
                    }
                }
            }
        }
    }
Builder for the tuning config for a search cluster.

@author geirst
config-model/src/main/java/com/yahoo/vespa/model/builder/xml/dom/DomSearchTuningBuilder.java