class ConfigEntityType

class ConfigEntityType extends EntityType {
  
  /**
   * {@inheritdoc}
   */
  // phpcs:ignore Drupal.NamingConventions.ValidVariableName.LowerCamelName
  public $entity_type_class = 'Drupal\\Core\\Config\\Entity\\ConfigEntityType';
  
  /**
   * {@inheritdoc}
   */
  public $group = 'configuration';
  
  /**
   * {@inheritdoc}
   */
  public function get() {
    $this->definition['group_label'] = new TranslatableMarkup('Configuration', [], [
      'context' => 'Entity type group',
    ]);
    return parent::get();
  }

}