code: public void traverse(int pos) throws org.xml.sax.SAXException
    {
      m_dtm = m_transformer.getXPathContext().getDTM(pos);
      m_startNode = pos;
  
      super.traverse(pos);
    }
docs: Perform a pre-order traversal non-recursive style.
  
  @param pos Start node for traversal
  
  @throws TransformerException