Download the device icon matching the request parameters.
For details on the lookup procedure, see [method@GUPnP.DeviceInfo.get_icon_url]
| this | |
| requested_mime_type |
The requested file format, or null for any |
| requested_depth |
The requested color depth, or -1 for any |
| requested_width |
The requested width, or -1 for any |
| requested_height |
The requested height, or -1 for any |
| prefer_bigger |
true if a bigger, rather than a smaller icon should be returned if no exact match could be found |