class ContentTranslationContextualLinks

class ContentTranslationContextualLinks extends DeriverBase implements ContainerDeriverInterface {
    
    /**
     * The content translation manager.
     *
     * @var \Drupal\content_translation\ContentTranslationManagerInterface
     */
    protected $contentTranslationManager;
    
    /**
     * Constructs a new ContentTranslationContextualLinks.
     *
     * @param \Drupal\content_translation\ContentTranslationManagerInterface $content_translation_manager
     *   The content translation manager.
     */
    public function __construct(ContentTranslationManagerInterface $content_translation_manager) {
        $this->contentTranslationManager = $content_translation_manager;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, $base_plugin_id) {
        return new static($container->get('content_translation.manager'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getDerivativeDefinitions($base_plugin_definition) {
        // Create contextual links for translatable entity types.
        foreach ($this->contentTranslationManager
            ->getSupportedEntityTypes() as $entity_type_id => $entity_type) {
            $this->derivatives[$entity_type_id]['title'] = t('Translate');
            $this->derivatives[$entity_type_id]['route_name'] = "entity.{$entity_type_id}.content_translation_overview";
            $this->derivatives[$entity_type_id]['group'] = $entity_type_id;
        }
        return parent::getDerivativeDefinitions($base_plugin_definition);
    }

}