closedquestion-8.x-3.x-dev/src/ClosedQuestionViewBuilder.php

<?php

namespace Drupal\closedquestion;

use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\EntityViewBuilder;

/**
 * View builder handler for closed questions.
 */
class ClosedQuestionViewBuilder extends EntityViewBuilder {

  /**
   * {@inheritdoc}
   */
  public function buildComponents(array &$build, array $entities, array $displays, $view_mode) {
    /** @var \Drupal\closedquestion\Entity\ClosedQuestionInterface[] $entities */
    if (empty($entities)) {
      return;
    }

    parent::buildComponents($build, $entities, $displays, $view_mode);

    foreach ($entities as $id => $entity) {
      $bundle = $entity->bundle();
      $display = $displays[$bundle];

      // Add Language field text element to closed question render array.
      if ($display->getComponent('langcode')) {
        $build[$id]['langcode'] = [
          '#type' => 'item',
          '#title' => t('Language'),
          '#markup' => $entity->language()->getName(),
          '#prefix' => '<div id="field-language-display">',
          '#suffix' => '</div>',
        ];
      }
    }
  }

}