code: private static List<EntityInfo> findUniqueEntities(TreeMap<String,EntityInfo> chainIds2entities) {
  
  		List<EntityInfo> list = new ArrayList<EntityInfo>();
  
  		for (EntityInfo cluster:chainIds2entities.values()) {
  			boolean present = false;
  			for (EntityInfo cl:list) {
  				if (cl==cluster) {
  					present = true;
  					break;
  				}
  			}
  			if (!present) list.add(cluster);
  		}
  		return list;
  	}
docs: Utility method to obtain a list of unique entities from the chainIds2entities map
  @return