code: @Deprecated
      public void addVetoableCommitListener(VetoableCommitListener vetoableCommitListener)
      {
          if (vetoableCommitListeners == null)
              vetoableCommitListeners = new ArrayList<VetoableCommitListener>(5);
          vetoableCommitListeners.add(vetoableCommitListener);
      }
docs: Adding a vetoableCommitListener might prevent a formModel.commit() but this is not the correct location
  to add back-end logic to check for a consistent formObject. Besides this the vetoableCommitListener
  doesn't add any other real advantage for our case. Therefor deprecating to prevent wrong usage.