wp-includes/abilities-api/class-wp-ability.php:417Retrieves the ability category for the ability.
string public function get_category(): string { return $this->category; }Introduced in 6.9.0. Unchanged from 6.9.7 through 7.1.0.
Signature, return type and hooks compared across 3 parsed releases.
src/wp-includes/abilities-api/class-wp-ability.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.