myPrefixesMap.put(prefix, uri);
Stack mappings = (Stack) myPrefixesMap.get(prefix); if (mappings == null) { mappings = new Stack(); myPrefixesMap.put(prefix, mappings); } mappings.push(uri);
    public void startPrefixMapping(String prefix, String uri) throws SAXException {        myPrefixesMap.put(prefix, uri);    }