How can I retrieve the attributes for images using the populate attribute in Flamelink?

Question

I'm trying to use the populate attribute in the Flamelink get() query to populate images, as I've noticed that setting populate: true slows down the response time for the request.

I'm trying this:

const content = await flamelinkApp.content.get({
    schemaKey: page,
    populate: [{
     field: "images",
     sizes: {
       width: 1920,
       height: 999,
       quality: 1,
     },
    }],
});

However, all images only return their ID. Ideally, I just want their url returned - so, the sizes attribute might not be what I'm after, but I'd just like something back when using populate for now.

For reference, here is where I first read about using the populate attribute to speed up queries: https://github.com/flamelink/flamelink-js-sdk/issues/104#issuecomment-536525185

And here is information on the get() query itself: https://flamelink.github.io/flamelink/#/content?id=get