code: public void start(Resource xmlFile) throws PageException {
  	InputStream is = null;
  	try {
  	    XMLReader xmlReader = XMLUtil.createXMLReader();
  	    xmlReader.setContentHandler(this);
  	    xmlReader.setErrorHandler(this);
  	    xmlReader.parse(new InputSource(is = IOUtil.toBufferedInputStream(xmlFile.getInputStream())));
  	}
  	catch (Exception e) {
  	    throw Caster.toPageException(e);
  	}
  	finally {
  	    IOUtil.closeEL(is);
  	}
  
      }
docs: start execution of the parser
  
  @param xmlFile
  @param saxParserCass
  @throws PageException