code: public static boolean isVersion10ResourceAdapter(InputStream xmlStream) {
          try {
              SAXParserFactory factory = SAXParserFactory.newInstance();
              factory.setNamespaceAware(true);
              factory.setValidating(false);
              XMLReader parser = factory.newSAXParser().getXMLReader();
              SAXVersionHandler handler = new SAXVersionHandler();
              parser.setEntityResolver(resolver);
              parser.setContentHandler(handler);
              parser.parse(new InputSource(xmlStream));
              return handler.isVersion10ResourceAdapter;
          } catch (SAXException ex) {
              // Check for FFDC
          } catch (ParserConfigurationException e) {
              // Check for FFDC
          } catch (IOException e) {
              // Check for FFDC
          }
          return false;
      }
docs: This method is used to inspect the ra.xml and check if its a 1.0 RA. This is called only
  if we fail parsing the ra.xml using JAXB for 1.5/1.6
  
  @param xmlStream The ra.xml file
  @return whether the resource adapter is a 1.0 resource adapter