private void incrementIdlingResourceCounter(String modifId) {
   synchronized (this) {
     Timber.d("increment idling counter %s", modifId);
     idlingResource.increment();
     updates.add(modifId);
   }
 }
 private void decrementIdlingResourceCounter(String currentlyUpdatingRepoModifId) {
   synchronized (this) {
     if (updates.contains(currentlyUpdatingRepoModifId)) {
       Timber.d("decrement idling counter %s", currentlyUpdatingRepoModifId);
       idlingResource.decrement();
       updates.remove(currentlyUpdatingRepoModifId);
     }
   }
 }