private String removeScene(String sceneId) {
   mDbManager.removeScene(sceneId);
   mDbManager.removeTaskBy(sceneId);
   if (StorageFactory.getUserStorage(context).getCurrentScene().sceneID.equals(sceneId)) {
     StorageFactory.getUserStorage(context).setCurrentScene(null);
   }
   return IntentConsts.Extra.EPISODES;
 }
 private String removeEpisode(String episodeId) {
   List<String> scenes = mDbManager.removeEpisode(episodeId);
   if (StorageFactory.getUserStorage(context).getCurrentEpisode().episodeID.equals(episodeId)) {
     StorageFactory.getUserStorage(context).setCurrentEpisode(null);
   }
   if (ListsUtils.isEmpty(scenes)) return null;
   mDbManager.removeTasksBy(scenes);
   mDbManager.removeEpisodeIdFromCourse(episodeId);
   return IntentConsts.Extra.EPISODES;
   // ADD MANAGER
 }