public IDEnumImpl() 
{
        // Walking through the elements, rather than the keys, gives
        // us attribute IDs that have not been converted to lowercase.
        this.elements = attrs.elements();
}

 public  void close() throws NamingException 
{
        elements = null;
}

 public boolean hasMore() throws NamingException 
{
        return hasMoreElements();
}

 public boolean hasMoreElements() 
{
        return elements.hasMoreElements();
}

 public String next() throws NamingException 
{
        return nextElement();
}

 public String nextElement() 
{
        Attribute attr = elements.nextElement();
        return attr.getID();
}