public Intent startChange() {
    if (mContentChangedModel.getType() == null) {
      Log.e(TAG, "type is null");
      return null;
    }
    try {

      String extraUpdate = null;
      switch (mContentChangedModel.getType()) {
        case REMOVED:
          extraUpdate = removeContent();
          break;
        case UPDATED:
          extraUpdate = updateContent();
          break;
        case CREATED:
          extraUpdate = createNewContent();
          break;
      }
      if (extraUpdate != null) {
        Intent intent = new Intent();
        intent.setAction(IntentConsts.UPDATE_CONTENT);
        intent.putExtra(IntentConsts.Extra.CONTENT_TYPE, extraUpdate);
      }
      return null;
    } catch (RuntimeException e) {
      Log.e(TAG, "E= " + e.toString());
      return null;
    }
  }