private void notifyUpdateCompleted() {
   if (DEBUG) {
     Log.i(LOG_TAG, "[CALLING] onUpdateCompleted()");
   }
   mUpdateCallbacks.onUpdateCompleted(mDocumentInfo);
 }
 private void notifyUpdateFailed(CharSequence error) {
   if (DEBUG) {
     Log.i(LOG_TAG, "[CALLING] onUpdateCompleted()");
   }
   mUpdateCallbacks.onUpdateFailed(error);
 }
 private void notifyUpdateCanceled() {
   if (DEBUG) {
     Log.i(LOG_TAG, "[CALLING] onUpdateCanceled()");
   }
   mUpdateCallbacks.onUpdateCanceled();
 }