NodeTypeMapper.php

<?php

namespace Drupal\node\ConfigTranslation;

use Drupal\config_translation\ConfigEntityMapper;
use Drupal\Core\Config\Entity\ConfigEntityInterface;

/**
 * Provides a configuration mapper for node types.
 */
class NodeTypeMapper extends ConfigEntityMapper {
    
    /**
     * {@inheritdoc}
     */
    public function setEntity(ConfigEntityInterface $entity) {
        parent::setEntity($entity);
        // Adds the title label to the translation form.
        $node_type = $entity->id();
        $config = $this->configFactory
            ->get("core.base_field_override.node.{$node_type}.title");
        if (!$config->isNew()) {
            $this->addConfigName($config->getName());
        }
    }

}