addCellProvider( cc, new CellChangeTracker() ).applyChanges();
}
if ( machine instanceof IStackWatcherHost )
{
IStackWatcherHost swh = (IStackWatcherHost) machine;
ItemWatcher iw = new ItemWatcher( this, swh );
watchers.put( node, iw );
swh.updateWatcher( iw );
}
}