A blueprint system for querying which foliage is nearby? Saw in a live training.

Hi all,

In this foliage live training, Unreal Engine Artist Ryan Brucks says there is a system in place that lets you query what foliage is near the player, and spawn different particle and sound effects depending on what is found.

Here is a link that takes you right to the quote!

Anyone know where I can read up on this? I found an ambient effects blueprint in the kite demo but it was empty!