code: public void startPrefixMapping(String prefix, String uri)
          throws org.xml.sax.SAXException
      {
          // the "true" causes the flush of any open tags
          startPrefixMapping(prefix, uri, true);
      }
docs: Begin the scope of a prefix-URI Namespace mapping
  just before another element is about to start.
  This call will close any open tags so that the prefix mapping
  will not apply to the current element, but the up comming child.
  
  @see org.xml.sax.ContentHandler#startPrefixMapping
  
  @param prefix The Namespace prefix being declared.
  @param uri The Namespace URI the prefix is mapped to.
  
  @throws org.xml.sax.SAXException The client may throw
  an exception during processing.