API

To render coupon description/info for a product, the $product object can be used as follows:

<?php
global $product;
if ( $product ) {
    echo WooCommerce_Volume_Discount_Coupons_Product::render_info( $product );
}
?>

The WooCommerce_Volume_Discount_Coupons_Shortcodes class provides additional methods that can be used.