code: @Override
      public boolean isMyType(final Document document) {
          boolean ok = false;
  
          final Element rssRoot = document.getRootElement();
          final Namespace defaultNS = rssRoot.getNamespace();
  
          ok = defaultNS != null && defaultNS.equals(getRSSNamespace());
  
          return ok;
      }
docs: Indicates if a JDom document is an RSS instance that can be parsed with the parser.
  <p/>
  It checks for RDF ("http://www.w3.org/1999/02/22-rdf-syntax-ns#") and RSS
  ("http://purl.org/rss/1.0/") namespaces being defined in the root element.
  
  @param document document to check if it can be parsed with this parser implementation.
  @return <b>true</b> if the document is RSS1., <b>false</b> otherwise.