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();
    }

}