如何在Woocommerce中获取特定帖子ID的所有可用变体ID？ [重复]

Im wondering how to get an array of all avilable variation ids of a specific product by providing its post id?

I looked into WC_Product_Variation class but seems that it doesnt have the variation id. it would be nice if there is a clean way to get it using Woocommerce API witout having to select it using mysql query.

Thanks

</div>

I found the answer, it was

    $handle=new WC_Product_Variable('920');
        $variations = $handle->get_children();