ElementChange interface and accessing those methods..

Question

Hi all, I'm stuck on accessing the three methods contained in ElementChange (below). This interface class is supposed to be an inner class interface of DocumentEvent, if that helps? This is more a java question about the API (which is not so documented in this area of ElementChange. If someone can lead me down the right path, it would be fantastic!! Thanks so much! Sorry I'm not able to provide my attempts with ElementChange, as I'm so lost at how I can access it.. :(
Element[] getChildrenAdded();
Element[] getChildrenRemoved();
Element[] getElement();So far I have my DocumentListener ( which is added to my JEditorPane - separate class)
public class Changes implements DocumentListener {
    public Changes() {
    //----------------------Inferface Methods Start-----------------------//
    //Method from DocumentListener
    public void changedUpdate( DocumentEvent e ) {
        pushEditInfo( e );
    //Method from DocumentListener
    public void insertUpdate( DocumentEvent e ) {
        pushEditInfo( e );
    //Method from DocumentListener
    public void removeUpdate( DocumentEvent e ) {
        pushEditInfo( e );
    //----------------------Inferface Methods Finish-----------------------//
    //Method to handle DocumentEvents
    private void pushEditInfo( DocumentEvent e ) {
            Document doc = ( Document )e.getDocument();
            Element elem = doc.getDefaultRootElement();
            //get hold of element change - need this for elementchange class' methods
            e.getChange( elem );
}

Answer 1

Mistake: methods are:
Element[] getChildrenAdded();
Element[] getChildrenRemoved();
Element getElement();