Does Endnote have API to get current bibliographic styles?

I want to get current bibliographic styles from Endnote database using Endnote API. Is there any API I can use in the EndNote plugin? thanks in advance.

Another question is how I can use API to  get “favorite Output style list” instead of get “All existing Output style list” ?

IFormatService::GetOutputStyles can get the full list, but I need the favorite list.