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<?php
namespace Drupal\Core\Cache;
/**
* Provides an implementation of CacheableResponseInterface.
*
* @see \Drupal\Core\Cache\CacheableResponseInterface
*/
trait CacheableResponseTrait {
/**
* The cacheability metadata.
*
* @var \Drupal\Core\Cache\CacheableMetadata
*/
protected $cacheabilityMetadata;
/**
* {@inheritdoc}
*/
public function addCacheableDependency($dependency) {
// A trait doesn't have a constructor, so initialize the cacheability
// metadata if that hasn't happened yet.
if (!isset($this->cacheabilityMetadata)) {
$this->cacheabilityMetadata = new CacheableMetadata();
}
$this->cacheabilityMetadata = $this->cacheabilityMetadata->merge(CacheableMetadata::createFromObject($dependency));
return $this;
}
/**
* {@inheritdoc}
*/
public function getCacheableMetadata() {
// A trait doesn't have a constructor, so initialize the cacheability
// metadata if that hasn't happened yet.
if (!isset($this->cacheabilityMetadata)) {
$this->cacheabilityMetadata = new CacheableMetadata();
}
return $this->cacheabilityMetadata;
}
}