Caught me a little late, as I had already learned how to use a basic filter. It's actually pretty simple and you should definitely learn their functionality.
I shoved this into my onloop after defining my designated area:
Filter<GroundItem> LocationFilter = new Filter<GroundItem>()
{
@Override
public boolean match(GroundItem GroundItem)
{
return myArea.contains(GroundItem) ;
}
};
I then ran this in my code
GroundItem Loot = getGroundItems().closest(LocationFilter);
This ended up picking up all loot in the designated area which I will then have to include/exclude certain items at a later time.