docs: public void add(String events, String...ids) {
          for (String event : EventDrivenUpdatesMap.parseEvents(events)) {
              Set<String> listenerIds = delegate.get(event);
              if (listenerIds == null) {
                  listenerIds = new HashSet<>();
                  delegate.put(event, listenerIds);
              }
  
              listenerIds.addAll(Arrays.asList(ids));
          }        
      }