wp-includes/SimplePie/src/SimplePie.php:2572Get a single link for the feed
$keyintoptional0$relstringoptional'alternate'string|null public function get_link($key = 0, $rel = 'alternate') { $links = $this->get_links($rel); if (isset($links[$key])) { return $links[$key]; } return null; }Introduced in 1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/SimplePie/src/SimplePie.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.