code: private Set<Integer> extractPortsSet(SystemMember member)
  		throws AdminException {
  		Set<Integer> portsSet = new HashSet<Integer>();
  		SystemMemberCache cache = member.getCache();
  		if (cache != null) {
  			SystemMemberCacheServer[] cacheServers = cache.getCacheServers();
  			if (cacheServers != null) {
  				for (SystemMemberCacheServer cacheServer : cacheServers) {
  					portsSet.add(cacheServer.getPort());
  				}
  			}
  		}
  
  		return portsSet;
  	}
docs: Extracts port from the SystemMember object.
  
  @param member
  - the specified SystemMember
  @return - port if its found, -1 otherwise
  @throws AdminException