Mimetypes icons should be plugin-based (for new input/output plugins, e.g.)
I have started to develop DOCX input plugin and done quite a lot (already enough for my own needs, tables and colors left). But DOCX icon is the "unknown" one, with a question mark. After digging around I've found out that all mimetypes are registered in FileIconProvider and I couldn't find any possibility to extend it with my own icon in the plugin init (e.g. via get_resources).
I suppose it would be a nice feature to have an extension mechanizm and to have certain plugin type or just another "hackaround" how to add an icon to specific format without putting it into images/mimetyps directory.
So is my statement correct or do I simply don't know how to do that via plugin?