annotate core/lib/Drupal/Core/Cache/UnchangingCacheableDependencyTrait.php @ 13:5fb285c0d0e3

Update Drupal core to 8.4.7 via Composer. Security update; I *think* we've
been lucky to get away with this so far, as we don't support self-registration
which seems to be used by the so-called "drupalgeddon 2" attack that 8.4.5
was vulnerable to.

<?php

namespace Drupal\Core\Cache;

/**
 * Trait to implement CacheableDependencyInterface for unchanging objects.
 *
 * @see \Drupal\Core\Cache\CacheableDependencyInterface
 */
trait UnchangingCacheableDependencyTrait {

  /**
   * {@inheritdoc}
   */
  public function getCacheContexts() {
    return [];
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheTags() {
    return [];
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheMaxAge() {
    return Cache::PERMANENT;
  }

}