For the 16004 build seems they only added
GetLootSourceInfo(slot) (unused) wowpedia/
wowprog
Edit:
It seems to be used for differentiating between from what GUIDs an item (stack) is while AoE looting
In my case there were [Wool Cloth] x10 in the 4th loot slot
Lua Code:
-- guid, lootQuantity = GetLootSourceInfo(slot)
GetLootSourceInfo(4) => "0xF130B4AA00000035", 4, "0xF130B4A900000034", 4, "0xF130B4AC00000067", 2
"Riverpaw Poacher" = 0xB4AA =
46250
"Riverpaw Slayer" = 0xB4A9 =
46249
"Riverpaw Shaman" = 0xB4AC =
46252