Lacking Recyclerview methods

Hi! I would like to refactor a complex Viewgroup with a recyclerview inside; this Viewgroup has a strong interaction with the recyclerview because it can transfer or not touch events to it.
I'm using some methods that i'm not able to find in Litho, like:
findChildViewUnder
(LinearLayoutManager)findViewByPosition
getChildAdapterPosition
(LinearLayoutManager)onSaveInstanceState

Also i'm not able to share a touch event from ViewGroup (parent of RecyclerView) with Litho Recycler Component( with RecyclerView I use 'recyclerview.ontouchevent(event)' and so i'm able to scroll and at the same time consuming touchevent from parent ViewGroup)

Thanks.