[Closed] How to make texture plugin with multiple outputs in Slate editor?

Hi,

I’m developing texture plugin for appleseed renderer and it would be great to have multiple outputs on it. I noticed built-in Substance texture map have multiple outputs when loaded substance preset. That makes me think it is possible to do it but I couldn’t find anything in docs or samples.
Does anyone have any idea how to achieve that? They only unusual thing on Sustance map is that they have several Mixin interfaces, but it still doesn’t give me a clue how those outputs are exposed.

Thanks,
Sergo.