wp-includes/class-wp-textdomain-registry.php:79Initializes the registry.
public function init() { add_action( 'upgrader_process_complete', array( $this, 'invalidate_mo_files_cache' ), 10, 2 ); }Introduced in 6.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-textdomain-registry.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.