View file phpBB3/vendor/twig/twig/lib/Twig/Cache/Filesystem.php

<?php

use Twig\Cache\FilesystemCache;

class_exists('Twig\Cache\FilesystemCache');

@trigger_error('Using the "Twig_Cache_Filesystem" class is deprecated since Twig version 2.7, use "Twig\Cache\FilesystemCache" instead.', \E_USER_DEPRECATED);

if (false) {
    /** @deprecated since Twig 2.7, use "Twig\Cache\FilesystemCache" instead */
    class Twig_Cache_Filesystem extends FilesystemCache
    {
    }
}