WC_Emails::no_stock PHP Method

    public function no_stock($product)
    {
        $subject = sprintf('[%s] %s', $this->get_blogname(), __('Product out of stock', 'woocommerce'));
        /* translators: %s: product name */
        $message = sprintf(__('%s is out of stock.', 'woocommerce'), html_entity_decode(strip_tags($product->get_formatted_name()), ENT_QUOTES, get_bloginfo('charset')));
        wp_mail(apply_filters('woocommerce_email_recipient_no_stock', get_option('woocommerce_stock_email_recipient'), $product), apply_filters('woocommerce_email_subject_no_stock', $subject, $product), apply_filters('woocommerce_email_content_no_stock', $message, $product), apply_filters('woocommerce_email_headers', '', 'no_stock', $product), apply_filters('woocommerce_email_attachments', array(), 'no_stock', $product));
    }