code: protected function createConfigurationDefinition()
      {
          $types = ['normal', 'final', 'abstract'];
  
          return new FixerConfigurationResolver([
              (new FixerOptionBuilder('types', 'What types of classes to mark as internal'))
                  ->setAllowedValues([(new AllowedValueSubset($types))])
                  ->setAllowedTypes(['array'])
                  ->setDefault(['normal', 'final'])
                  ->getOption(),
          ]);
      }
docs: {@inheritdoc}