void notifyStopped() {
   if (embedder != null && embedder.isActive()) {
     for (int i = strokes.size() - 1; i >= 0; i--) {
       embedder.unregisterAccelerator(i);
     }
   }
 }
 void unregisterAccelerator(AWTKeyStroke stroke) {
   if (stroke == null) return;
   if (embedder != null && embedder.isActive()) {
     int index = strokes.indexOf(stroke);
     embedder.unregisterAccelerator(index);
   }
 }