Can't set icon for PasteAction

Hello,

I am trying to change the icons for a netbeans platform application.  I can happily change the icon programmatically for things like CopyAction, CutAction etc... just by doing this:

public class CopyAction extends org.openide.actions.CopyAction {
    
    @Override
    protected String iconResource() {
        return ResourceUtilities.getInstance().themedResourcesPath("copy.png"); // NOI18N
    }   
}

I want to do the same with PasteAction but the bloody thing is a final class!  This is rather annoying.  

Please could someone suggest a way of being able to control the icon.  The problem I get is that whatever I try, the lower layers of the system decide to use the icon path that is specified in PasteAction, namely:

    protected @Override String iconResource() {
        return "org/openide/resources/actions/paste.gif"; // NOI18N
    }

Pleae help!! :-)

Kind regards