if (results == null || results.isEmpty()) {
System.out.println("No result received within given timeout");
} else {
System.out.println(String.format(OUTPUT_FORMAT, " ", "Node", "Group"));
for (Node node : results.keySet()) {
ManageGroupResult result = results.get(node);
if (result != null && result.getGroups() != null) {
for (Group g : result.getGroups()) {
if (g.getMembers() != null && !g.getMembers().isEmpty()) {
for (Node memeber : g.getMembers()) {
String name = g.getName();
String mark = " ";
if (memeber.equals(clusterManager.getNode()))