How to select item in Spinner list which is inside RecyclerView.ViewHolder?

Question

Android

Right now I'm writing an Espresso test that should select a specific item in the Spinner.
The structure is as follows:
Fragment
|-- RecyclerView
---|--MyCustomHolder
-----|--Spinner
---------|--MyItemsAdapter
You need to select a specific element in the Spinner. The Spinner is inside one of the items inside the RecyclerView.
I found that you can select an element in the Sprinner that is on the form using onData.
To work with RecyclerView I use RecyclerViewActions. But I can't figure out how to connect these two methods.