code: protected void parentStateChanged(PropertyChangeEvent evt) {
  		super.parentStateChanged(evt);
  		if (ValidatingFormModel.VALIDATING_PROPERTY.equals(evt.getPropertyName())) {
  			validatingUpdated();
  		}
  	}
docs: {@inheritDoc}
  
  Additionally the {@link DefaultFormModel} adds the event:
  
  <ul>
  <li><em>Validating state:</em> if validating is disabled on parent,
  child should not validate as well. If parent is set to validating the
  child's former validating state should apply.</li>
  </ul>