for( MultipleCDockable dockable : control.getRegister().getMultipleDockables() ){
allDockables.add( dockable.intern() );
}
PredefinedDockSituation predefined = (PredefinedDockSituation)situation;
Set<Dockable> visible = predefined.listVisible( allDockables, layout );
findVisible( visible, layout );
return visible;
}