Item Mixins

[Lolzen]

So i'm just diving in to the whole Mixin stuff and am not sure if this is possible.

As GetDetailedItemLevelInfo() is still not returning the correct value all the time, i stumbled upon this thread which worked wonders for me.

local function getItemlvl(unit, slotIndex)
	if slotIndex == 18 then
		slotIndex = 19
	end
	if unit and UnitExists(unit) then
		local item = Item:CreateFromEquipmentSlot(slotIndex)

		if item then
			return item:GetCurrentItemLevel()
		end
	end
end

This will return the correct values on the PaperdollFrame, however i'm now hitting a wall to understand how i can do the exact same thing for the InspectFrame.
As CreateFromEquipmentSlot will only take the slotIndex, it somewhere hast to point to the player's inventory. If i could replicate that and point to the inspected unit's inventory this would open the door to the solution.

Is this even possible somewhow with using this/a Mixin?

EDIT: also using the CreateFromItemLink Mixin doesn't show the correct itemLevel else this wouldn't be an issue.