code: protected void addGroupToRole(String group, String role) {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) {
              SibTr.entry(tc, CLASS_NAME + "addGroupToRole", new Object[] { group, role });
          }
          Set<String> groupsForTheRole = roleToGroupMap.get(role);
          if (groupsForTheRole != null) {
              groupsForTheRole.add(group);
          } else {
              groupsForTheRole = new HashSet<String>();
              groupsForTheRole.add(group);
          }
          roleToGroupMap.put(role, groupsForTheRole);
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) {
              SibTr.exit(tc, CLASS_NAME + "addGroupToRole");
          }
      }
docs: Add a Group to the particular role
  
  @param group
  @param role