docs: @Override
      public synchronized SyndFeed getSyndFeed() {
          try {
              final SyndFeed feed = (SyndFeed) super.getSyndFeed().clone();
  
              final List<SyndEntry> changedEntries = new ArrayList<SyndEntry>();
  
              final List<SyndEntry> entries = feed.getEntries();
              for (final SyndEntry entry : entries) {
                  if (changedMap.containsKey(entry.getUri())) {
                      changedEntries.add(entry);
                  }
              }
  
              feed.setEntries(changedEntries);
  
              return feed;
          } catch (final CloneNotSupportedException ex) {
              throw new RuntimeException(ex);
          }
      }