Services 3 File upload, create/return image styles Ahoy all!

So, long story short, I'm uploading files to drupal through services from an angular app, and getting a response/url/etc no problem. My question is, how do I enable image styles to be created on REST upload from services? I'm receiving an empty response in the image_styles array. I am assuming it likely isn't something I need to add into the POST request, but happy to add POST request code if needed.

I am coming up a little short on my google-fu on this one, and any help appreciated!
the image created with the style when you request a page displaying that image_style So you have to call it in code.

The default generation method only creates images when they are requested by a user's browser.

image_style_url  Returns the URL for an image derivative given a style and image path

code sample :

// $file object from file_load($fid) 
image_style_url('style name', $file-&gt;uri)