public boolean editName(@NotNull final String fromName, @NotNull final String toName) {
   if (fromName.equals(toName)) return false;
   final LocalChangeList list = myMap.get(fromName);
   final boolean canEdit = list != null && (!list.isReadOnly());
   if (canEdit) {
     final LocalChangeListImpl listImpl = (LocalChangeListImpl) list;
     listImpl.setNameImpl(toName);
     myMap.remove(fromName);
     myMap.put(toName, list);
     final ChangeListEditHandler editHandler = listImpl.getEditHandler();
     if (editHandler != null) {
       listImpl.setCommentImpl(
           editHandler.changeCommentOnChangeName(toName, listImpl.getComment()));
     }
   }
   return canEdit;
 }
 @Nullable
 public String editComment(@NotNull final String fromName, final String newComment) {
   final LocalChangeList list = myMap.get(fromName);
   if (list != null) {
     final String oldComment = list.getComment();
     if (!Comparing.equal(oldComment, newComment)) {
       final LocalChangeListImpl listImpl = (LocalChangeListImpl) list;
       listImpl.setCommentImpl(newComment);
       final ChangeListEditHandler editHandler = listImpl.getEditHandler();
       if (editHandler != null) {
         listImpl.setNameImpl(
             editHandler.changeNameOnChangeComment(listImpl.getName(), listImpl.getComment()));
         if (!fromName.equals(listImpl.getName())) {
           myMap.remove(fromName);
           myMap.put(listImpl.getName(), list);
         }
       }
     }
     return oldComment;
   }
   return null;
 }