//2b. remove pages. Note: we don't need to generate rm, becausee they
//are included pages.
if (_pgRemoved != null) {
final DesktopCtrl dtctl = (DesktopCtrl)_exec.getDesktop();
for (final Iterator it = _pgRemoved.iterator(); it.hasNext();)
dtctl.removePage((Page)it.next());
}
//3. generate response for invalidated pages
if (_pgInvalid != null) {
for (final Iterator it = _pgInvalid.iterator(); it.hasNext();) {