@Override
 public LocalChangeList findOrCreateList(final String name, final String comment) {
   LocalChangeList list = myWorker.getCopyByName(name);
   if (list == null) {
     list = addChangeList(name, comment);
   }
   return list;
 }
 @Nullable
 @Override
 public LocalChangeList findChangeList(final String name) {
   return myWorker.getCopyByName(name);
 }