public int removeImportFolders(User feedOwner, String feedUrl, User folderOwner, List<String> folders) throws NoSuchUserException, NoSuchFeedSubscriptionException{
GnizrDaoUtil.fillId(userDao,feedOwner);
GnizrDaoUtil.fillId(userDao,folderOwner);
FeedSubscription feedSub = getSubscription(feedOwner, feedUrl);
if(feedSub == null){
throw new NoSuchFeedSubscriptionException("no such feed: " + feedUrl + " for user: " + feedOwner.getUsername());
}
List<Folder> folderImport = new ArrayList<Folder>();
for(String folderName : folders){
Folder f = folderDao.getFolder(folderOwner,folderName);
if(f != null){