Embed.php

<?php

namespace Drupal\views\Plugin\views\display;

use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\views\Attribute\ViewsDisplay;

/**
 * The plugin that handles an embed display.
 *
 * @ingroup views_display_plugins
 *
 * @todo Wait until annotations/plugins support access methods.
 *   no_ui => !\Drupal::config('views.settings')->get('ui.show.display_embed'),
 */
class Embed extends DisplayPluginBase {
  
  /**
   * {@inheritdoc}
   */
  protected $usesAttachments = TRUE;
  
  /**
   * {@inheritdoc}
   */
  public function buildRenderable(array $args = [], $cache = TRUE) {
    $build = parent::buildRenderable($args, $cache);
    $build['#embed'] = TRUE;
    return $build;
  }

}