To get the image of a unit, use the request:
http://{host}/avl_item_image/<item_id>/<max_border>/<any.png>?b=<long>&v=<bool>&sid=<text>
| Name | Description | 
|---|---|
| item_id | unit ID | 
| max_border | max image size (from 16 to 256 pixels, recommended: 32) | 
| any | any value (optional), specified if it is needed to download the image instead of using the cached value | 
| b | border size | 
| v | should svg icon be converted to png | 
| sid | session ID | 
Returns an image in PNG format.
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