private function _getAcceptanceJsPart(__IComponent &$component)
 {
     $return_value = '';
     if ($component->getAcceptance()) {
         $error_message = $component->getErrorMessageIfEmpty();
         if ($error_message != null) {
             $return_value = $component->getId() . '.add(Validate.Acceptance, {failureMessage : "' . $error_message . '"});' . "\n";
         } else {
             $return_value = $component->getId() . '.add(Validate.Acceptance);' . "\n";
         }
     }
     return $return_value;
 }