wp-includes/SimplePie/src/Cache/Memcache.php:117Save data to the cache
$dataarray|SimplePie\SimplePiebool public function save($data) { if ($data instanceof \SimplePie\SimplePie) { $data = $data->data; } return $this->cache->set($this->name, serialize($data), MEMCACHE_COMPRESSED, (int) $this->options['extras']['timeout']); }One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
$data retyped from array|SimplePie\SimplePie to SimplePie\Cache\array<mixed>|SimplePie\SimplePie.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.