Is there a multiAdd equivalent for the new cart?

[breezetree]

I'm still using the old box.js cart and would love to move to the new cart (looks nice!).

I would prefer just one checkout button (not multiple Add to Cart buttons) and to be able to pass multiple products with their quantities to the new shopping cart. I looked through the documentation but could not locate anything. Is this possible?

[E-junkie_Guru]

Our box.js cart script should now be pointing to our new cart for everyone, and this new cart does support multiAdd, as documented here:

Auto-entering multiple items into a cart?