NullPool.php

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<?php
namespace Elgg\Cache;

final class NullPool implements Pool {
    public function get($key, callable $callback) {
        return call_user_func($callback);
    }
    
    public function invalidate($key) {
        // values are always expired, so nothing to do
    }

    public function put($key, $value) {
        // values are always expired, so nothing to do
    }
}