trait WebformSubmissionSubmittedToTrait in Webform Views Integration 8.5

trait WebformSubmissionSubmittedToTrait {
  use EntityTranslationRenderTrait;

  /**
   * The entity manager.
   *
   * @var \Drupal\Core\Entity\EntityManagerInterface
   */
  protected $entityManager;

  /**
   * The language manager.
   *
   * @var \Drupal\Core\Language\LanguageManagerInterface
   */
  protected $languageManager;

  /**
   * {@inheritdoc}
   */
  public function query() {

    // Do nothing, just override the parent.
  }

  /**
   * {@inheritdoc}
   */
  public function getEntityTypeId() {
    return $this
      ->getSourceEntity($this
      ->getView()->result[$this
      ->getView()->row_index])
      ->getEntityTypeId();
  }

  /**
   * {@inheritdoc}
   */
  protected function getEntityManager() {
    return $this->entityManager;
  }

  /**
   * {@inheritdoc}
   */
  protected function getLanguageManager() {
    return $this->languageManager;
  }

  /**
   * {@inheritdoc}
   */
  protected function getView() {
    return $this->view;
  }

  /**
   * Retrieve the "submitted to" entity from a result row.
   *
   * @param \Drupal\views\ResultRow $row
   *
   * @return \Drupal\Core\Entity\EntityInterface|null
   *   Source entity of this submission is submitted to or NULL should it not
   *   have one
   */
  protected function getSourceEntity(ResultRow $row) {

    /** @var WebformSubmissionInterface $entity */
    $entity = $this
      ->getEntity($row);
    return $entity
      ->getSourceEntity();
  }

}