wp-includes/SimplePie/src/Cache/Psr16.php:33PSR-16 cache implementation
$cachePsr\SimpleCache\CacheInterface public function __construct(CacheInterface $cache) { $this->cache = $cache; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/SimplePie/src/Cache/Psr16.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.