docs: protected HeadersExtension parseHeaders(XmlPullParser parser) throws IOException, XmlPullParserException, SmackParsingException {
          HeadersExtension headersExtension = null;
          /* We are either at start of headers, start of data or end of req/res */
          if (parser.next() == XmlPullParser.START_TAG && parser.getName().equals(HeadersExtension.ELEMENT)) {
              headersExtension = HeadersProvider.INSTANCE.parse(parser);
              parser.next();
          }
  
          return headersExtension;
      }