public void writeGraph(boolean isSimple) {
String graphName = "hierarchy" + name;
+ System.out.println("#GRAPHNAME=" + graphName);
graphName = graphName.replaceAll("[\\W]", "");
if (isSimple) {
if (node.isMergeNode()) {
nodeName = node.getNamePropertyString();
Set<HNode> mergeSet = mapMergeNodetoMergingSet.get(node);
+ System.out.println("node=" + node + " mergeSet=" + mergeSet);
nodeName += ":" + convertMergeSetToString(mergeSet);
} else {
nodeName = node.getNamePropertyString();