code: public org.w3c.dom.Document outputW3CDom(final SyndFeed feed) throws FeedException {
          return feedOutput.outputW3CDom(feed.createWireFeed());
      }
docs: Creates a W3C DOM document for the given SyndFeedImpl.
  <p>
  This method does not use the feed encoding property.
  <p>
  
  @param feed Abstract feed to create W3C DOM document from. The type of the SyndFeedImpl must
  match the type given to the FeedOuptut constructor.
  @return the W3C DOM document for the given SyndFeedImpl.
  @throws FeedException thrown if the W3C DOM document for the feed could not be created.