*/
private void collectionNode(PrintWriter out, int patternID, int nodeID)
throws IOException {
VelocityContext context = new VelocityContext();
TraceCollection col = this.activeCollections.get(patternID);
TraceNodeStats node = col.getNodeWithID(nodeID);
context.put("collection", col);
context.put("node", node);
Template t = getTemplate(velocityEngine,
"org/apache/avro/ipc/trace/templates/node.vm");
t.merge(context, out);