wp-includes/SimplePie/src/Enclosure.php:560Get a single keyword
$keyintoptional0string|null public function get_keyword(int $key = 0) { $keywords = $this->get_keywords(); if (isset($keywords[$key])) { return $keywords[$key]; } return null; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/SimplePie/src/Enclosure.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.