DecisionForest forest = forestBuilder.build(nbTrees, callback);
time = System.currentTimeMillis() - time;
log.info("Build Time: {}", DFUtils.elapsedTime(time));
log.info("Forest num Nodes: {}", forest.nbNodes());
log.info("Forest mean num Nodes: {}", forest.meanNbNodes());
log.info("Forest mean max Depth: {}", forest.meanMaxDepth());
if (isOob) {
Random rng;
if (seed != null) {