code: public RequestToken save(int flags, BaasHandler<BaasUser> handler) {
          BaasBox box = BaasBox.getDefaultChecked();
          SaveUser task = new SaveUser(box, this, flags, handler);
          return box.submitAsync(task);
      }
docs: Asynchronously saves the updates made to the current user.
  
  @param flags {@link RequestOptions}
  @param handler  an handler to be invoked when the request completes
  @return a {@link com.baasbox.android.RequestToken} to handle the async request