wp-includes/SimplePie/src/Source.php:297$keyoptional0$reloptional'alternate' public function get_link($key = 0, $rel = 'alternate') { $links = $this->get_links($rel); if (isset($links[$key])) { return $links[$key]; } return null; }3 changes between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
$key retyped from untyped to int.verified against source$rel retyped from untyped to string.verified against sourcenone to string|null.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.