wp-includes/SimplePie/src/Cache/Psr16.php:142Delete an item from the cache by its unique key.
$keystringbool public function delete_data(string $key): bool { return $this->cache->delete($key); }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.