All classes that implement RouteConverterInterface in Drupal 7 to 8/9 Module Upgrader 8
- class \Drupal\drupalmoduleupgrader\Plugin\DMU\Routing\ContentRoute implements ContainerFactoryPluginInterface, RouteConverterInterface uses StringTransformTrait
- class \Drupal\drupalmoduleupgrader\Plugin\DMU\Routing\FormRoute