wp-includes/SimplePie/src/Source.php:88SimplePie\Item public function get_item() { return $this->item; }One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
none to SimplePie\Item.verified against sourcesrc/wp-includes/SimplePie/src/Source.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.