protected function getFormFields(Controller $controller, $name, $context = [])
 {
     $record = $context['Record'];
     // Add status flag before extensions are triggered
     $this->beforeExtending('updateFormFields', function (FieldList $fields) use($record) {
         $fields->insertAfter('TitleHeader', LiteralField::create('FileSpecs', $this->getSpecsMarkup($record)));
     });
     return parent::getFormFields($controller, $name, $context);
 }