AbstractCursor does not implement interface member ICursor.Extras.set in BindingProject

Hi my name is Teo and I triying to create a xamaring binding library, evething goes fine until I add the SqlCipher jar.
This is my current metadata:

Android.Database.CursorWindow

I have tried to change the attribute setExtras ti fix the error for the set ICursor.Extras.set using

Android.Database.CursorWindow

but this does’t work.

Thanks for your comments,

Teofilo Cerda.