wp-includes/SimplePie/src/Cache/Memcache.php:91Retrieve the data saved to the cache
SimplePie\Cache\array<mixed>|false public function load() { $data = $this->cache->get($this->name); if ($data !== false) { return unserialize($data); } return false; }One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
array to SimplePie\Cache\array<mixed>|false.verified against sourcesrc/wp-includes/SimplePie/src/Cache/Memcache.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.