protected function shouldSkipForEmptyUpdate(FormInterface $form, $value, $fieldDefinitionIdentifier)
    {
        return
            $value === null &&
            (
                $form->getRoot()->has("ezforms_skip_empty_update_{$fieldDefinitionIdentifier}") &&
                $form->getRoot()->get("ezforms_skip_empty_update_{$fieldDefinitionIdentifier}")->getData() === 'yes'
            )
        ;
    }