addElement((XslAttribute)attributes.nextElement());
setFirstElement((XslAttribute)attributes.nextElement());
    private void merge(AttributeSet other) {	// Both attribute sets may inherit from other sets...	if (_useSets == null)	    _useSets = other._useSets;	else	    _useSets.addAttributeSets(other.getAttribute("use-attribute-sets"));	// Merge the contents of the two attribute sets...	final Enumeration attributes = other.elements();	while (attributes.hasMoreElements())	    addElement((XslAttribute)attributes.nextElement());    }