WC_Abstract_Legacy_Order::init PHP Method

    protected function init($order)
    {
        wc_deprecated_function('init', '2.7', 'Logic moved to constructor');
        if (is_numeric($order)) {
            $this->read($order);
        } elseif ($order instanceof WC_Order) {
            $this->read(absint($order->get_id()));
        } elseif (isset($order->ID)) {
            $this->read(absint($order->ID));
        }
    }