public void removeCustomSashFormListener(ICustomSashFormListener listener){
  if (customSashFormListeners != null) {
    customSashFormListeners.remove(listener);
  }
}

public void removeCustomSashFormListener ( ICustomSashFormListener listener ) { if ( customSashFormListeners != null ) { customSashFormListeners . remove ( listener ) ; } }
removes the custom sashform listener .
