CacheableNormalizerInterface.php

<?php

namespace Drupal\serialization\Normalizer;

use Symfony\Component\Serializer\Normalizer\NormalizerInterface;

/**
 * Defines the interface for normalizers producing cacheable normalizations.
 *
 * @see cache
 */
interface CacheableNormalizerInterface extends NormalizerInterface {
    
    /**
     * Name of key for bubbling cacheability metadata via serialization context.
     *
     * @see \Symfony\Component\Serializer\Normalizer\NormalizerInterface::normalize()
     * @see \Symfony\Component\Serializer\SerializerInterface::serialize()
     * @see \Drupal\rest\EventSubscriber\ResourceResponseSubscriber::renderResponseBody()
     */
    const SERIALIZATION_CONTEXT_CACHEABILITY = 'cacheability';

}