It there any workaround to get ecom-* fields by SDK?

Currently I am creating a custom web-site and
I need ecom-image-uris to show images saved in Square Online Business.

But as written in below url, I learned those ecom attributes are not guaranteed.

So, my question is…
Will the ecom attributes be able to fetch using SDK in future?
Or is there any ways to get the ecom-image-uris from somewhere else?

This is just some complaint but why does API explorer returns
those ecom attributes even though it does not work in actual SDK.
Would be more friendly and caused no trouble if it did not show from the first place.

Unfortunately, at this time since the ecom attributes aren’t documented they currently available in the SDK.