Create perch_shop product items programmatically

Hello, We have a site running on PerchRunway with a few hundreds of products stored under a collection.

Now we are starting to implement perch_shop and we are trying to find a way to create products programmatically so that we can import these products without re-creating them manually.

Is there a way to do this? I have been looking into the PerchShop_Product.class.php but I don't see a "create" method

Thanks