WC_Auth::__construct PHP Method

        public function __construct()
        {
            // Add query vars
            add_filter('query_vars', array($this, 'add_query_vars'), 0);
            // Register auth endpoint
            add_action('init', array(__CLASS__, 'add_endpoint'), 0);
            // Handle auth requests
            add_action('parse_request', array($this, 'handle_auth_requests'), 0);
        }