workbench_email-8.x-1.x-dev/src/TemplateListBuilder.php

<?php

namespace Drupal\workbench_email;

use Drupal\Core\Config\Entity\ConfigEntityListBuilder;
use Drupal\Core\Entity\EntityInterface;

/**
 * Provides a listing of Email Template entities.
 */
class TemplateListBuilder extends ConfigEntityListBuilder {

  /**
   * {@inheritdoc}
   */
  public function buildHeader() {
    $header['label'] = $this->t('Email Template');
    $header['id'] = $this->t('Machine name');
    return $header + parent::buildHeader();
  }

  /**
   * {@inheritdoc}
   */
  public function buildRow(EntityInterface $entity) {
    $row['label'] = $entity->toLink($entity->label(), 'edit-form');
    $row['id'] = $entity->id();
    // You probably want a few more properties here...
    return $row + parent::buildRow($entity);
  }

}