Cacheable.php

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<?php

namespace Elgg;

use Elgg\Cache\CompositeCache;
use ElggCache;

trait Cacheable {

    protected $cache;

    public function setCache(ElggCache $cache) {
        $this->cache = $cache;
    }

    public function getCache() {
        if (!isset($this->cache)) {
            return new CompositeCache('void', _elgg_config(), ELGG_CACHE_BLACK_HOLE);
        }

        return $this->cache;
    }
}