function load($key): bool {
    $cacheKey = [__CLASS__, $key];
    $viewRenderer = $this->viewRenderer;

    /** @var \yii\caching\Cache $cache */
    $cache = $viewRenderer->cache;
    if (!$viewRenderer->enableCaching || !$cache->exists($cacheKey)) return false;

    eval("?>{$cache->get($cacheKey)}");
    return true;
  }