Wish Skype for business SDK for Android

It seems that Microsoft makes the Skype for Business SDK for Android availabe:
https://msdn.microsoft.com/en-us/skype/appsdk/skypeappsdk

Did someone tried to build a B4A library based on this SDK which seems to be well documented?

I'm trying to build a B4A library based on the S4B SDK provided by Microsoft.
I was able to compile the examples directly in Android Studio, but building a library based on this seems to be a difficult job.
The SDK contains several aar Android libraries.
As described here:
https://www.b4x.com/android/forum/threads/android-library-format-aar.52116/
the aar libraries are complex archives.
I have tried to follow Erel advices from here:
https://www.b4x.com/android/forum/threads/import-library-aar-android-studio.60259/#post-380056
but the arr libs contains not only jar files (class.jar), but resources, JNI libs (.so files) and other java (jar) libraries.

Putting the so files in additional\armeabi fodler and importing all other jars (clasess and java libs) does not work.

Any other hints on how to go further?

Thank you.
Dan

Please start a new thread in the library developers forum.

Ok, I've moved the discussion here:
https://www.b4x.com/android/forum/threads/skype-for-business-b4a-library.66839/

Thank you.
Dan