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- <?php
- /*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- namespace Symfony\Component\HttpKernel\CacheWarmer;
- /**
- * Interface for classes able to warm up the cache.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
- interface CacheWarmerInterface extends WarmableInterface
- {
- /**
- * Checks whether this warmer is optional or not.
- *
- * Optional warmers can be ignored on certain conditions.
- *
- * A warmer should return true if the cache can be
- * generated incrementally and on-demand.
- *
- * @return bool true if the warmer is optional, false otherwise
- */
- public function isOptional();
- }
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