Android Question SOLVED / Amir RecyclerView Espandable

I want to use the tree view of the RecyclerView Espandable for an item selection.
Based on the Amir RecyclerView Espandable example, on the "Title_onItemClick" event, how to know if the "Sender" of the event "Title_onItemClick" is the click on the Label Title or the click on the Image (arrow_down.png) ?

I'll appreciate any help.
Best Regards