function HelpTopicSection::getCacheMetadata

Gets the merged CacheableMetadata for all the top level help topic plugins.

Return value

\Drupal\Core\Cache\CacheableMetadata The merged CacheableMetadata for all the top level help topic plugins.

File

core/modules/help/src/Plugin/HelpSection/HelpTopicSection.php, line 231

Class

HelpTopicSection

Provides the help topics list section for the help page.

Namespace

Code

protected function getCacheMetadata() {
  if (!isset($this->cacheableMetadata)) {
    $this->cacheableMetadata = new CacheableMetadata();
    foreach ($this->getPlugins() as $plugin) {
      $this->cacheableMetadata
        ->addCacheableDependency($plugin);
    }
  }
  return $this->cacheableMetadata;
}